Sister blog of Physicists of the Caribbean in which I babble about non-astronomy stuff, because everyone needs a hobby

Friday, 31 August 2018

This wasn't part of the deal

I am completely at a loss as to why hard Brexiteers nutters have such an absurd degree of influence within the Tory party. At this point May seems infuriatingly invincible, like a particularly dislikeable and ineffectual cockroach. So why is she so afraid of a minority of lunatics ?

Originally shared by Jenny Winder

Hooligan Brexiters now offer a mad, dystopian future nobody voted for
#StopBrexitSaveBritain #PeoplesVote #FinalSay #NobodyVotedForThis
https://www.theguardian.com/commentisfree/2018/aug/30/brexiters-future-crashing-out-hard-soft-brexit-dominic-raab

Bendable tablets

It's a good start. It'll be a lot more useful when it's more flexible rather than smaller - then you could have a regular phone where you could extend the screen when you wanted a bigger display.

https://www.bbc.com/news/av/technology-45364434/tablet-bends-like-ancient-scroll

Thursday, 30 August 2018

A five dimensional camera

I want one.
http://va.newsrepublic.net/s/RmprRm

Interspecies communication under the waves

They're plotting something...

A dolphin in Scotland's Firth of Clyde may be exchanging messages with porpoises. The dolphin, named Kylie, usually makes clicking sounds with a frequency of around 100KHz. But after interacting with a group of local porpoises he changed his tune. Research from the University of Strathclyde found that Kylie's clicking became higher than normal, and closer to that of his new found friends, who generally make sounds at 130KHz.
https://www.bbc.com/news/science-environment-45348036

Network Propaganda : the two sides are not equal

Could be an interesting read.

The book’s title, “Network Propaganda: Manipulation, Disinformation, and Radicalization in American Politics,” is a mouthful, but the book’s message is almost simple. The two sides are not, in fact, equal when it comes to evaluating “news” stories, or even in how they view reality. Liberals want facts; conservatives want their biases reinforced. Liberals embrace journalism; conservatives believe propaganda. In the more measured but still emphatic words of the authors, “the right-wing media ecosystem differs categorically from the rest of the media environment,” and has been much more susceptible to “disinformation, lies and half-truths.”

“Network Propaganda” does refute some favourite liberal explanations for the results of the 2016 election. The authors acknowledge the sustained efforts of fake-news Web sites from the nations of the former Soviet Union, as well as the work of Russian hackers and bots, but they are not convinced that their impact was significant. They also downplay the influence of the Facebook-targeting work done by Cambridge Analytica, and they write that Facebook’s news-feed algorithm was of only modest importance. Rather, it was the feedback loop of right-wing quasi-journalism that had the most impact—and that hypothesis has profound implications not only for the study of the recent past but also for predictions about the not-so-distant future.

https://www.newyorker.com/news/daily-comment/a-new-book-details-the-damage-done-by-the-right-wing-media-in-2016

Wednesday, 29 August 2018

Predicting outbreaks of cholera

Cholera cases in Yemen have been slashed by a new system that predicts where outbreaks will occur. Last year, there were more than 50,000 new cases in just one week - this year, the numbers plummeted to about 2,500. The system has enabled aid workers to focus efforts on prevention several weeks in advance of an outbreak - by monitoring rainfall.

The Met Office produces a rainfall forecast for Yemen. Using its supercomputers, it is to determine the specific amount of rain that will fall and pinpoint the areas it will hit within a 10km (six-mile) radius.These are important because downpours overwhelm the sewerage system and spread the infection.

The forecasts are used in conjunction with a computer model developed by Prof Rita Colwell, at the University of Maryland, and Dr Antar Jutla, at West Virginia University. It draws on a variety of local information such as population density, access to clean water, and seasonal temperature. Together, this information enables scientists to predict the areas most likely to experience an outbreak, up to four weeks in advance.

Across the world, an estimated 30,000 people die of cholera each year - mostly in South Asia and Africa. The new predictive system has the potential to slash that number, according to Helen Ticehurst, who is the Met Office's international development manager.
https://www.bbc.com/news/health-45259922

Goats prefer smiling faces, sometimes

How very strange.

Co-author Dr Alan McElligott, from Queen Mary, University of London, and colleagues set up pairs of black-and-white photos about 1.3m apart on one wall in their test area. Then, a goat would be let loose to explore the set-up.

The researchers found that the goats strongly preferred the smiling faces, approaching the happy faces before acknowledging the angry photos. They also spent more time examining the smiling faces with their snouts. But the effect was only significant when the happy-faced photo was placed on the right-hand side. When the happy photos were placed on the left, the goats showed no significant preference either way.

The researchers think this is because the goats are using one side of their brain to process the information - something that's seen in other animals. It could either be that the left side of the brain processes positive emotions, or that the right side of the brain is involved in avoidance of angry faces.
https://www.bbc.com/news/science-environment-45336330

Street grafting is better than graffiti

I believe in some parts of America it's illegal to collect rainwater. Very odd.

Haughwout helped found Guerilla Grafters, a group that grafts fruit branches onto city trees. Grafting is an ancient farming practice based on the weird fact that trees will accept new limbs. If you tape a cherry branch to an ornamental tree, the branch will start growing cherries. For Haughwout, grafting is a way to feed people for free. For the city of San Francisco, it's a crime. But that's okay; in fact, Haughwoute is counting on it.

"The city considers such vandalism a serious offense," said Mohammed Nuru, San Francisco's public works director, at the time. The government and grafters went back and forth, arguing their cases in interviews and articles.

But Haughwout didn't actually seem to mind all the negative attention. In fact, she considers it part of the project. "It exposes who city government really works for," she said. "Governments usually work for property. They say 'falling fruit attracts homelessness and rats,' which is obviously a really suspicious pairing."

https://www.treehugger.com/green-architecture/why-guerilla-gardeners.html

The role of statistics in the replication crisis

A nicely balanced article that completely fails to jump on the EVERYONE HAS SCREWED UP SO HARD bandwagon. Well, done Guardian, I salute you.

Personally I think we've got a long way to do before we properly understand what "statistically significant" really means. Far too much trust in raw numbers and not enough assessment of context, selection effects and other biases and stuff.

Originally shared by Event Horizon

Something rotten in the state of social science ? Even social science is bound by a social context and the implicit psychological and cultural biases of competitive, professional environments. It's an interesting reflection that some academic papers and studies that might be used to inform (among other things) public policy decisions may be as subject to exaggerated significance as are many other contested cultural and professional narratives. Science does not occur in a cultural and economic or value-free vacuum. Questions could be asked of the extent to which cultural, professional and economic pressures to publish papers provides opportunities for false conclusions to be preemptively celebrated as significant. It is an interesting issue.

In total, the team tried to replicate one main finding from each of the 21 social science papers published between 2010 and 2015 in Science or Nature, widely regarded as the two most prestigious scientific journals.

They found evidence to back the original conclusions in 13 of the 21 (62%) studies. But, on average, the sizes of the effects recorded were about 75% as big in the replication studies, despite these using sample sizes that were on average five times as big.

“These results show that ‘statistically significant’ scientific findings need to be interpreted very cautiously until they have been replicated even if published in the most prestigious journals,” said Magnus Johannesson of the Stockholm School of Economics, another of the project leaders.

The latest work revealed scientists were also uncannily accurate at predicting which studies would later succeed or fail to replicate. About 200 scientists were recruited and on average predicted the replication outcomes for 18 out of the 21 papers under scrutiny.

Prof Malcolm Macleod, a neurologist at the University of Edinburgh who has previously investigated reproducibility in biomedical science, said there was a need to prioritise the quality of science as well as the novelty of findings. “We need to wean ourselves off the nectar and the crack cocaine of highly exciting results and work out what we can do to maximise the quality” he said. “That’s becoming much more of a thing now.”

This is clearly what happens when you are willing to let the truth get in the way of a good story...
😆
https://www.theguardian.com/science/2018/aug/27/attempt-to-replicate-major-social-scientific-findings-of-past-decade-fails

Tuesday, 28 August 2018

Talent-luck : sometimes mimicking the observations is the wrong approach

Another exploration of talent-luck :
https://repl.it/@RhysTaylor1/TalentVersusLuck

This time I kept all the conditions the same as in the original paper, with talent playing an almost negligible role when events happen, but simply changed the distribution of talent from Gaussian to random uniform. This means there are now far more people with high and low talent levels, and the final distribution of talent-wealth is completely different. Remarkably, the slope of the wealth distribution is unchanged, though the most talented people are now also the most wealthy. It seems the original model really does give talent the worst possible chance !

The next step is to see if I can improve speed by replacing the strange random-walk method. I'll try and measure the frequency distribution of events, then have force them to occur at that rate for each agent. There might be a nice little paper in this...



Pro tip : just because some claims to be rational doesn't mean that they actually are

This is an old one, but glorious :

I understand that most people see the Flat Earth Society's views as extremely unorthodox and perhaps a bit kooky. I'd like the public to know, though, that our views are based on extensive research and we highly value the pursuit of truth. In fact, the Society's motto is (and has been since the 1800's) "In Veritate Victoria" -- Victory in Truth.

Which is also why when people declare themselves not to be racist, I generally stop taking them seriously. Of course, it's also possible that Flat Earthers do care about the truth but are just extremely stupid. Probably a large dose of rampant denialism and stupidity, I reckon.
https://www.businessinsider.com/flat-earth-society-to-obama-climate-change-speech-georgetown-2013-6?IR=T

Trade tariffs explained by a nice guy on twitter but ought to have a blog instead

Excellent. Though not for the first or last time will I shout to people who want to give explanations longer than a few tweets that they should START A BLOODY BLOG ALREADY ! but apparently I'm the only one who thinks that.

Heck, for the sake of it, here's the whole thing in a sensible bloomin' format.



Morning my fine followers, fancy a 'Trade tariffs in laymans terms' thread for breakfast? alright then, here ya go...

“But Germany, France and Italy won’t stop buying things from the UK if we leave” say the Brexiteers, they NEED us, and they won’t put us into a tariff regime"... so says the Leave EU camp. It won’t be a choice, it’s not a case of the EU damaging their imports to be spiteful to a UK that just voted to leave the EU.

The fact is that there exists a document called the Treaty of the European Union and it sets out the very foundation of how the 28 member states work and cooperate together. It was part written by the UK and part drafted by UK lawyers. It was agreed by all Member States that the EU would create a ‘thing’ called the “EU Common External Tariff Regime” for countries outside the EU that wanted to to trade with EU businesses. Different tariffs are in place for different product types. Higher for products the EU doesn’t desperately need and lower for the things it does need desperately like energy for example – which explains why Norway get such a good deal as around half of Norway's exports to the EU are oil and gas.

When we tear up our membership card, Article 50 of the Treaty comes into force. It says that a country that notifies the EU we are leaving the club all our agreements terminate 24 months after notification. On 29/3/19 we are automatically under the external tariff regime that the UK helped to draft and fully signed up to. The ONLY way this could be changed is if the Treaty is changed. This requires the agreement of all remaining 27 countries. Many of whom have a referendum lock if there are any changes to the Treaty.

It just isn't feasibly possible to have all the necessary referendums and treaty change agreed by heads of state of 27 nations across Europe in the 2 year time limit.

Meanwhile we could continue to renegotiate the 4,500 plus different product groups that we trade with the EU to try and get lower tariffs on the things we buy and sell. This could take as much as a decade (or longer if other trade negotiations are any guide). The point is that the UK becoming a part of the EU Tariff Regime (which meets WTO terms) is automatic if we elect to Leave and there is nothing that Germany, France or Spain or even the UK can do about it.

Currently we enjoy unlimited trade with the largest trading bloc on the planet free from duties, tariffs or quota and preferential terms with a further 60 countries around the world outside the EU under our EU membership benefits. It’s also worth noting that of all the top ten economies in the world every single one of them with a population of less than one billion people is a member of a continental trade bloc like the EU. UK has just 0.065% of 1bn. Do we really think we are powerful enough to buck the trend of global trade and international economics? I think not. We are pretty good, but not that good.

https://twitter.com/JasonJHunter/status/1034344938593562624

Physical simulations do not avoid the need for interpretations

Ooo-eck. Lots of implications here.

The next step of this shift away from purely mathematical modelling is already on the way: Physicists now custom design laboratory systems that stand in for other systems which they want to better understand. They observe the simulated system in the lab to draw conclusions about, and make predictions for, the system it represents.

The best example may be the research area that goes by the name “quantum simulations.” These are systems composed of interacting, composite objects, like clouds of atoms. Physicists manipulate the interactions among these objects so the system resembles an interaction among more fundamental particles. For example, in circuit quantum electrodynamics, researchers use tiny superconducting circuits to simulate atoms, and then study how these artificial atoms interact with photons.

These simulations are not only useful to overcome mathematical hurdles in theories we already know. We can also use them to explore consequences of new theories that haven’t been studied before and whose relevance we don’t yet know.

Quantum simulations also make us wonder what it means to explain the behaviour of a system to begin with. Does observing, measuring, and making a prediction by use of a simplified version of a system amount to an explanation?

But for me, the most interesting aspect of this development is that it ultimately changes how we do physics. With quantum simulations, the mathematical model is of secondary relevance. We currently use the maths to identify a suitable system because the maths tells us what properties we should look for. But that’s not, strictly speaking, necessary. Maybe, over the course of time, experimentalists will just learn which system maps to which other system, as they have learned which system maps to which maths. Perhaps one day, rather than doing calculations, we will just use observations of simplified systems to make predictions.

I dunno, I'd say an explanation requires a description of the physical process. If you've just got a prediction (i.e. conventionally just a numerical value) you haven't got a physical understanding at all. Like how Maxwell had his crazy vortex theory that gave identical mathematical values for EM forces but gave way to something much easier for the rest of us to understand, the maths is not the model. If I've got a physical model that makes a prediction, but I don't understand how the physical model works, what use is that ? It's of no more benefit than a mathematical model I can't interpret. Do you need a physical description ? Perhaps not, but dammit, I want one. Can't see the point in making predictions I don't understand, that sort of defeats the whole purpose.

https://www.quantamagazine.org/the-end-of-theoretical-physics-as-we-know-it-20180827/?mc_cid=78b85a8581&mc_eid=ded24b5349

Air pollution makes you stupider

Chronic exposure to air pollution can cause harm to cognitive performance, a new study reveals. Researchers believe that the negative impact increases with age, and affects men with less education the worst. Over four years, the maths and verbal skills of some 20,000 people in China were monitored by the US-Chinese study.

The study was based on measurements of sulphur dioxide, nitrogen dioxide and particulates smaller than 10 micrometres in diameter where participants lived. It is not clear how much each of these three pollutants is to blame. Carbon monoxide, ozone and larger particulates were not included in the study.

In this study, researchers tested people of both sexes aged 10 and above between 2010 and 2014, with 24 standardised maths questions and 34 word-recognition questions. Exposure to high levels of polluted air "can cause everyone to reduce their level of education by one year..., which is huge," one of the co-authors, Xi Chen of the Yale School of Public Health, told the Guardian newspaper.

One of the reasons the researchers suggest older men with less education were worst affected by chronic exposure to air pollution is because those subjects often work outdoor manual jobs.
https://www.bbc.com/news/health-45326598

Monday, 27 August 2018

Protracted problems caused by keeping code private

Originally shared by Eli Fennell

How A Software Bug Fueled a 7-Year Scientific Debate About Water

In 2011, a team of researchers at Berkeley, led by the renowned chemist David Chandler, announced the results of model simulations their team had performed on supercooled pristine water: at every temperature measured, they claimed, the liquid water remained fairly homogeneous in structure. In short, their models suggested that, if kept pure of dust and other contaminants, liquid water remained the same until reaching a rapid freezing point.

Given his widespread acclaim, Chandler's teams findings were widely accepted, much to the chagrin of a team of researchers at Princeton, led by Pablo Debenedetti. The Princeton Team, seemingly using the exact same modeling, had come to a quite different conclusion: at supercool temperatures, before freezing into ice crystals (which, in pristine water, do not form until temperatures are extremely supercool due to a lack of impurities for ice crystals to form on, but form quickly when they finally do form), the water appeared to take on two different liquid states, high-density and low-density. As this resembled the transitional stage at higher temperatures where liquid water and water vapor become indistinguishable, they took this to indicate a low temperature critical period between solid and liquid water.

Seeing the issue of getting different results from apparently the same data and modeling, the two teams began to collaborate, trying to find the source of the disagreement. This fell apart, though, when the Princeton team continued to publish results, before a consensus on the source of the disagreement could be reached. The relationship between the two then turned contentious, and at times openly hostile, with each side accusing the other of an error, but neither side agreeing on what that error might be.

Eventually, Debenedetti had an insight: although the two teams had used the same mathematical models to simulate supercooled water behaviors, Chandler's team had used an algorithm to speed up their processing, allowing them to run simulations over longer periods. While Chandler believed this gave their results an edge, subsequent speed up efforts by Debenedetti had matched them for duration, but not matched their results. It had, thus, occurred to Debenedetti that there may be a bug in the Berkeley code.

Had Chandler and his team quickly turned over their code for inspection, the matter could have been resolved quickly, but instead it would be another couple of years before they published it. When they did, Debenedetti and his team were vindicated: the Berkeley algorithm used an unconventional and, as it turned out, improper technique to initialize their molecular dynamics simulations, which among other things inflated the simulated temperatures by tens of degrees.

As a result, Chandler's team had failed to see the transitional state of high- and low-density liquids, as one would fail to see water turn to ice at the freezing temperature if your thermometer was in fact wrong and the real temperature was above that. In failing to publish their code right away, Chandler's team had, in fact, violated the scientific principles of transparency and reproducibility, since no one could truly have replicated their findings. In the process, they had wasted a lot of time and energy, for themselves and other researchers.

While opinion has now shifted in favor of Debenedetti's simulations, it is worth noting that despite 7-years of debate over this, neither side in the end has yet proven anything. Their simulations were just that, simulations, using models of liquid molecular dynamics known to be imperfect (as all such models are). Only real tests, on real pristine water, at the right temperatures will resolve this.

While there can be no doubt that algorithms will play an increasingly invaluable role in scientific research, they are no less in need of transparency than any other material or method used in conducting research. One cannot argue effectively against results from a Black Box (i.e. a mechanism whose inner means of operation are opaque), after all.

https://physicstoday.scitation.org/do/10.1063/PT.6.1.20180822a/full/

The People's Vote campaign needs Labour's help

Well, let's hope Corbyn's supporters are pro-EU, as seems likely, and that the man himself is an anomaly, as also seems plausible. More problematic would be what he'd do if he found people wanted him to change direction. Changing the man's mind is like getting blood from a stone, but he's awfully keen on staying in charge.

Much better would be to get a second referendum and have someone else in Labour lead it.

Campaign leaders think the best way to get a new referendum is to get the main opposition party to back it officially. At the weekend, the People's Vote commissioned polling which suggested voters targeted by Labour were more likely to back a referendum - and to favour remaining in the EU - than the electorate as a whole. It hopes that this might encourage a change in approach by the party's leadership.

The People's Vote campaign believes a general election is unlikely so is pushing to get the issue of a referendum debated at next month's Labour conference. This is not guaranteed as the conference as a whole would need to decide that this would be a priority for debate. Even if it clears this hurdle, some left-wing members of the party - who usually back Jeremy Corbyn - would need to offer their support, for any motion on Brexit to be successful.

https://www.bbc.com/news/uk-45316697

A huge cold water coral reef discovered off Carolina

Some 160 miles off the coast of Charleston, South Carolina, a half mile below the ocean surface, is a dense forest of cold water corals. And based on their observations and recent sonar mapping of the ocean floor, researchers estimate that the reef runs for at least 85 linear miles.

The live corals are growing atop giant mounds of rubble, the skeletal remains of coral colonies that have been growing in the same area for millennia. Cordes expects these Atlantic coral structures could be hundreds of thousands of years old.

https://www.huffingtonpost.com/entry/scientists-discover-giant-deep-sea-coral-reef-off-atlantic-coast_us_5b81c298e4b0cd327dfd415e?0xj

Cleaning up crime, literally

We're all products of the system as much as we are of ourselves. Apparently, our personalities and intelligence (I.Q.) are largely heritable. If so, I'd say it becomes extremely important to solve problems by focusing on the system. That people are predisposed towards certain behaviours more than others doesn't mean you should just give up in despair when they behave like arseholes - although God knows Trump supporters make that tempting - but instead it would be better to concentrate on designing a system which exploits those tendencies productively. In this case, people aren't going to clean up their own neighbourhoods, but if you do it for them, they just might sustain the change for themselves. Shouting at them that they should just behave better won't help. You can't change the people (at least not directly) but you can change their actions. And then feedback sets in...

One of the team’s first research projects involved two natural experiments in Philadelphia. In one, they examined violent crime around 2,356 abandoned buildings that had been in violation of Philadelphia’s anti-blight ordinance. A set of six hundred and seventy-six buildings had been remediated by the owners, which meant they had been “treated” with replacement doors and windows; the rest had not. Every month, for a three-year period between 2010 and 2013, the researchers compared violent-crime levels around the treated buildings with violent-crime levels around a randomly selected, geographically matched group of buildings that remained in disrepair.

The second experiment compared violent crime around vacant lots. According to the team’s research, there were 49,690 such lots in Philadelphia. P.H.S. had remediated at least 4,436 of them, which meant it had cleared trash and debris, graded the land, planted grass and trees to create a parklike setting, and installed low fences with walk-in openings to facilitate recreational use and deter illegal dumping. Again, Branas and his colleagues compared the treated sites with a set of randomly selected, geographically matched properties. In this study, they measured crime annually, over a full decade, from 1999 to 2008.

Compelling theories, as critics of broken-windows policing know all too well, are often betrayed by evidence. That’s why Branas was so surprised by the findings from their first study, published in the American Journal of Public Health, which showed a thirty-nine-per-cent reduction in gun violence in and around remediated abandoned buildings and a smaller—but still meaningful—five-per-cent reduction in gun violence in and around remediated lots. These are extraordinary numbers, at a level of impact one rarely sees in a social-science experiment.

Equally powerful, Branas said, was that there was no evidence that the violence had simply shifted to nearby places. The declines were real. And they lasted from one to nearly four years, making the benefit far more sustainable than those of other crime-reduction programs. “Honestly, it was a bigger effect than we’d expected to find,” he said.

The reasons are straightforward. Abandoned houses are good places for people involved in crime to hide when on the run. They’re also good places to store firearms. Untended lots are notoriously useful for drug dealing—in part because most law-abiding residents avoid them, and in part because dealers can hide their products in the weeds and tall grass if the police drive by. For communities, and for the police, they are hard places to monitor and control.

“Simple treatments of abandoned buildings and vacant lots returned conservative estimates of between $5.00 and $26.00 in net benefits to taxpayers and between $79.00 and $333.00 to society at large, for every dollar invested,” the team wrote. It’s not only more dangerous to leave the properties untended—it’s more expensive.

https://www.newyorker.com/books/page-turner/the-other-side-of-broken-windows

How to train your crows

Train your own crows !

The video is better than the text. Basically there's a feeding box with several training stages for the birds :
1) Open feeding so the birds get used to the box
2) Automatic opening so the birds get used to the mechanical movements
3) The machine dispenses coins which the birds have to put in a slot to receive food
4) No coins provided - the birds must find them for themselves.
1-3 have been experimentally verified and there's anecdotal evidence of 4, as well as using crushed cans to trigger the food release mechanism in similar experiments.

My inner cynic says it would be better to train people to pick up their own rubbish, but training crows is innately cool. I wonder what the long-term, large-scale effects of success will be. Would people be more casual about throwing away trash knowing the crows will collect it ?

https://boingboing.net/2018/08/22/build-a-crowbox-kit-and-become.html

The ant graveyard

"He's not dead, he's just... covered in oleic acid..."

Ants have graveyards where they take their dead. Apparently they do this for hygiene reasons :
https://news.nationalgeographic.com/news/2014/07/140708-corpse-removal-ants-social-animal-survival-science/

But they don't take them there straight away, only after two days when the corpse starts giving off oleic acid. Ants marked with oleic acid are carted off to the graveyard even if they're not dead, but what's weird is that they don't seem to mind very much, and will even take themselves there unassisted. When the acid rubs off, normal services are resumed.

https://www.youtube.com/watch?v=ZPw9dSV6y2c

Macroscopic entanglement

In an experiment, performed recently in the laboratory of Professor Mika Sillanpää at Aalto University in Finland, we set up two microfabricated vibrating circular membranes, like drumheads. Each was about the width of a human hair and we were able to measure them in a state that exhibited the quantum property of entanglement.

The two drumheads were brought into an entangled state through careful driving of a superconducting electrical circuit to which both were coupled. While these drumheads may seem small on the human scale, they are huge on the atomic scale – each drumhead is composed of trillions of atoms.

These drumheads are the largest objects to be prepared in an entangled state, and this experiment is perhaps the closest approach to a literal implementation of the famous thought experiment of Einstein, Podolsky and Rosen that first studied the phenomenon that became known as entanglement back in 1935.

Originally shared by Michael Sean Wright
https://ponderwall.com/index.php/2018/08/26/experiment-shows-quantum-entanglement-human-scale/

Friday, 24 August 2018

Japan's first female fighter pilot

First Lieutenant Misa Matsushima, 26, will begin duty on Friday having completed her training to fly F-15s, Japan's military has announced. "As the first female (fighter) pilot, I will open the way," she told reporters.

"Ever since I saw the movie Top Gun when I was in primary school, I have always admired fighter jet pilots," the graduate of Japan's National Defence Academy told journalists. "I wish to continue to work hard to fulfil my duty - not just for myself but also for women who will follow this path in the future." Three other women are currently training to join the elite group of fighter pilots.

Japan's air force began recruiting women in 1993 - except as fighter jet and reconnaissance aircraft pilots. It lifted that final ban in late 2015.

Earlier this year, Ryoko Azuma became the first woman to command a warship squadron. When she joined the country's maritime self-defence force in 1996, women were not allowed to serve on warships. That ban was lifted a decade ago, but women are still barred from serving on submarines. Women are also still banned from competing professionally in Japan's national sport, sumo wrestling.
https://www.bbc.com/news/world-asia-45295212

Talent-luck : meritocracies give the same distributions as if luck dominates

I think my talent-versus-luck investigations (https://repl.it/@RhysTaylor1/TalentVersusLuck) have yielded something interesting. The original claim is that abilities follow a Gaussian while wealth follows a power law, and therefore something besides talent is responsible for wealth. I think I can show that the two distributions are not as incompatible as it might first seem.

The Pluchino model is one in which wealth is generated through sheer luck. The only influence talent has is in determining if an agent is able to exploit a potentially lucky event. Unlucky events are always unlucky in their model, and there's no correlation between talent and wealth at all. They reproduce Pareto's Rule, where the 20% richest have 80% of the wealth, and show that wealth follows a power law. Although they don't show it, their model (which I have reproduced and can show gives excellent agreement with their other results) produces little or no change in the wealth fraction held by the 20% most talented people. So the rich always get richer, but the most talented are still at the mercy of chance.

I should stress that I'm not trying to examine the real-world here, just comparisons between models for the time being. Also, it's not clear (though I could easily test this) if it's actually the same individuals who get richer, or if the individuals in the richest 20% vary as a function of time while the wealth of that demographic increases.

Anyway, I made two small changes. First I set it so that unlucky events work in the same way as lucky events in the Pluchino model : the chance that they will actually cause an effect is proportional to the agent's talent. This made a small change, with a weak trend visible in the talent-money plot that wasn't visible before. Then, taking clues from the Discworldian notions of "inspiration particles", I set it so that the luck status of an event is also set to be good with a probability in proportion to each agent's talent. Events no longer have intrinsic good or bad properties but are entirely dependent on the agents they encounter. It's more like how some people seem to have lots of good ideas, rather than being entirely the victims of a capricious reality.

And that second change - I've only looked at this in combination with the first - makes a big difference. Now there's a clear trend in talent-wealth, albeit with strong scatter. Whereas the fraction of wealth held by the most talented 20% was previously flat, now it shows a very clear rise to 50% by the end of the run. The slope of the power law of wealth distribution appears to be entirely consistent with the original version.

So here we see a situation in which a Gaussian distribution of talent produces a power law of wealth distribution, while the most talented get justly rewarded. Things are getting more interesting.





Making the finite infinite in VR, somehow

A VR system that automatically makes subtle adjustments to prevent you bumping into things. They claim this is done without the user's noticing or experiencing any discomfort. Interesting.
https://www.bbc.com/news/av/technology-45190257/eye-tracking-creates-infinite-space-in-virtual-reality

Russia's robot is very Russian

Oh, Russia, you big silly.
https://www.bbc.com/news/blogs-trending-45282805

Austria really, really wants to make sure you're gay

After rejecting one asylum seeker on the grounds that they're not convincingly gay enough, so they can't really be gay, Austria is now rejecting another on the grounds that they're behaving with so much gayness that they can't really be gay.

Clearly Austria must absolutely love gay people if it's so important not to let in any phoneys...
https://www.bbc.co.uk/news/world-europe-45290800

Thursday, 23 August 2018

A dangerous way to get to work

It's just easier this way.


Found on the internet.

The weirdest sequel never made

Gladiator 2 : a giraffe struck by lightning and a time-travelling gladiator who isn't a gladiator.

I'd watch this movie.

Cave’s Gladiator 2 screenplay opens with Maximus waking up in the afterlife. To his disappointment, it isn’t the sun-kissed Elysium he dreamt of in Gladiator, but an endless rain-sodden netherworld where wretched refugees huddle on the shores of a black ocean. With the help of a ghostly guide, Mordecai, Maximus treks to a ruined temple where he meets Jupiter, Mars and five other diseased and decrepit Roman deities. Jupiter explains that one of their number, Hephaestus, has betrayed them, and is now preaching the gospel of another god who is more powerful than all of them.

...Certainly, you have to suspect that Cave was chuckling to himself when he had an emperor complaining, “My giraffe was struck by lightning.”

http://www.bbc.com/culture/story/20180810-gladiator-2-was-written-and-its-mad

Near-effortless realistic fake videos

Flat out amazing. And terrifying. Direct YouTube link : https://www.youtube.com/watch?v=GrP_aOSXt5U&feature=youtu.be


vid2vid is a "Pytorch implementation for high-resolution (e.g., 2048x1024) photorealistic video-to-video translation. It can be used for turning semantic label maps into photo-realistic videos, synthesizing people talking from edge maps, or generating human motions from poses."

https://github.com/NVIDIA/vid2vid

Talent versus luck : ALL the graphs

Graphs galore !

From the annals of Rhys' strange hobbies...

I finally got around to tidying up the plots from my talent-luck simulator :
https://repl.it/@RhysTaylor1/TalentVersusLuck

This is an attempt to reproduce the recent Pluchino claim that sheer luck can explain the wealth distribution in society and that talent plays only a minor role. More details and a link to my critique of the model can be found in the above link.

Now that the model is working and the graphs are comparable to the original Pluchino plots*, I've decided the first thing to do is to see how robust this result is to its own parameters. You can see a bunch of different alterations in the graphs below. The basic model is a simple world populated with "people" at fixed positions who encounter "events" moving around randomly. If they encounter a lucky event, they have a chance to double their wealth, which depends on their talent. If they have an unlucky event, then they always halve their wealth, regardless of their talent.

* The axes labels are wrong on the money histogram, which also doesn't display properly when the wealth range is very large, but meh. Also note that the slope on the wealth distribution plot has a fixed gradient for comparison to Pluchino, it's not a fit to the data.

In addition to their plots, Pluchino quote the total wealth fraction of the 20% wealthiest people in the simulation, noting that they have 80% of the total wealth. Therefore I've also plotted the fraction of the total wealth of the 20% richest as a function of time.

The results are as follows. In each case I've only changed a single parameter, to make comparisons with the original easier.

- The fiducial run uses identical parameters to the Pluchino original, and gets a very similar result. Hurrah !
Allowing this to continue for longer doesn't change things much except to make the fraction of wealth held by the richest 20% rather higher. This time variation isn't mentioned by Pluchino.

- Doubling the number of events to 1,000 alters the slope of the money distribution and the 80:20 rule is reached very quickly, and by the end of the simulation the 20% richest own nearly all of the wealth.

- Doubling the number of agents to 2,000 doesn't really change anything.

- Allowing both the events and agents to move around doesn't really change anything.

- Having the events change their luck status doesn't really change anything.

- Allowing talent to prevent bad luck doesn't really change anything, except for maybe at the extremes (the wealthiest and poorest individuals now have a greater talent difference).

- What does affect things rather strongly is how much the events move in each timestep. Changing this by a factor 2 has a dramatic difference in the slope of the wealth distribution. If they move less, then the wealth difference becomes more extreme more quickly, and if they move more slowly, the reverse happens. This choice of event movement is completely arbitrary.


The other key thing to note about this is that talent has no direct affect on wealth. This means that any trends due to talent are necessarily very weak. Also, wealth can only vary as a fraction of an individual's wealth : no-one can ever lose more than they have.

There are more many comments at musings on future improvements at the bottom of the code. There's still a whole bunch of things to play with here.










Wednesday, 22 August 2018

Nature is disgusting and terrifying

Here, have some nightmares. Don't everybody thank me at once.


Found on the internet.

Entropy doesn't necessarily mean disorder

Order out of chaos... how entropy doesn't always mess things up. Nice little video, but ends abruptly. Feels like it needs to be about 5 minutes longer.

If you want the punchline, entropy is here described as the number of ways of arranging a system. If there are more ordered than disordered arrangements possible, you'll get an ordered system even with high entropy. And of course you have to consider the overall level of entropy, not just in some localised region.

I seem to recall that Stephen Baxter's Time has a nice sequence describing entities in the year > 10^100 who live by recycling information, with no change of energy or entropy, absolutely immortal but condemned to relive the same memories over and over again. No idea if this is even remotely thermodynamically accurate.

https://www.youtube.com/watch?v=vSgPRj207uE

The worm that fires silly string of death

The choice of soundtrack is nearly as bizarre as the worm.

... this creature, that looks like a scary alien monster and can feel you through the air, moves slowly like it's in a horror film before projectile spraying you with its sticky Super Soaker of death rendering you powerless to only watch as it then stabs you with the knife it has hidden in its jaws like a prison shank that it uses to rip you apart before drinking your organs.

https://www.youtube.com/watch?v=7zV-OhAl0Cc

Designing cameras based on the algorithms, not the people, that will use them

Some friends and I used to joke that we should develop a company "Hughes Taylor Smith : Makers of Crap Telescope Optics". Precision mirrors are difficult, so we'd just make big crappy mirrors but scan them reeeeeally accurately to correct their resulting lousy images.

Apparently, this is not quite as bonkers as we thought it was.

Originally shared by Event Horizon

University of Utah electrical and computer engineering associate professor Rajesh Menon argues that all cameras were developed with the idea that humans look at and decipher the pictures. But what if, he asked, you could develop a camera that can be interpreted by a computer running an algorithm?

"Why don't we think from the ground up to design cameras that are optimized for machines and not humans. That's my philosophical point," he says.

A salient philosophical point, at that. In the march towards an almost entirely detached perceptual matrix, abstracted away from the vicissitudes of human wetware and into the pure linear reason of the machine, should we worry about the primary sensations and their categorisation and analysis ? There is a lot of trust at play here, ultimately, but in regards to the reduction of vision to a task made autonomously simple for data collection and analysis at a machine level, it is a sensible step to take.

Questioning the core methods and purposes of image acquisition is an example of innovation in which the axioms and primary assumptions of a system or a process are reconfigured in useful ways.

If a normal digital camera sensor such as one for a mobile phone or an SLR camera is pointed at an object without a lens, it results in an image that looks like a pixelated blob. But within that blob is still enough digital information to detect the object if a computer program is properly trained to identify it. You simply create an algorithm to decode the image.

Through a series of experiments, Menon and his team of researchers took a picture of the University of Utah's "U" logo as well as video of an animated stick figure, both displayed on an LED light board. An inexpensive, off-the-shelf camera sensor was connected to the side of a plexiglass window, but pointed into the window while the light board was positioned in front of the pane at a 90-degree angle from the front of the sensor. The resulting image from the camera sensor, with help from a computer processor running the algorithm, is a low-resolution picture but definitely recognizable. The method also can produce full-motion video as well as color images, Menon says.

The process involves wrapping reflective tape around the edge of the window. Most of the light coming from the object in the picture passes through the glass, but just enough—about 1 percent—scatters through the window and into the camera sensor for the computer algorithm to decode the image.


https://techxplore.com/news/2018-08-computerized-camera-optics-ordinary-window.html

India's heavy lift rocket

Scientists at the Indian Space Research Organisation (Isro) reckon they will need $1.28bn (£1.01bn) to fulfil Mr Modi's challenge - and they think they can launch the flight within 40 months. There are many reasons why they believe it can be done. They hope to use the country's heaviest rocket - the Geosynchronous Satellite Launch Vehicle Mark III or GSLV Mk-III - for the space flight.

This 640-tonne, 43-metre tall rocket was launched successfully in 2017. The coverage of the launch was euphoric, and often colourful, with websites comparing the rocket to the weight of 200 elephants or five jumbo jets. This rocket can launch 10 tonnes of payload into low-Earth orbit- an altitude of 2,000km (1,200 miles) or less above the planet - which is more than enough to send a crew into space, say scientists. With some modifications, the launch pad from a site off the Bay of Bengal can easily be used to launch astronauts, they say.
https://www.bbc.com/news/world-asia-india-45243908

Facebook is a direct contributing cause of attacks on refugees

A more interesting analysis than most.

Karsten Müller and Carlo Schwarz, researchers at the University of Warwick, scrutinized every anti-refugee attack in Germany, 3,335 in all, over a two-year span. In each, they analyzed the local community by any variable that seemed relevant. Wealth. Demographics. Support for far-right politics. Newspaper sales. Number of refugees. History of hate crime. Number of protests.

One thing stuck out. Towns where Facebook use was higher than average, like Altena, reliably experienced more attacks on refugees. That held true in virtually any sort of community — big city or small town; affluent or struggling; liberal haven or far-right stronghold — suggesting that the link applies universally.

Their reams of data converged on a breathtaking statistic: Wherever per-person Facebook use rose to one standard deviation above the national average, attacks on refugees increased by about 50 percent. Nationwide, the researchers estimated in an interview, this effect drove one-tenth of all anti-refugee violence.

It would have been nice to state what the base rate of attacks actually is, since a large fractional increase is easier starting from a small absolute level. That one-tenth ought to be emphasised a bit more, I think, since in what follows one gets the impression that Facebook is the only factor at work. Which it clearly isn't. It's small but significant, no more than that. That's not to say it might not have much broader, secondary supporting effects, but that's another topic. Here the focus is on direct violence.

If you're wondering about correlation not equalling causation, they've addressed that :

The uptick in violence did not correlate with general web use or other related factors; this was not about the internet as an open platform for mobilization or communication. It was particular to Facebook.

German internet infrastructure tends to be localized, making outages isolated but common. Sure enough, whenever internet access went down in an area with high Facebook use, attacks on refugees dropped significantly. And they dropped by the same rate at which heavy Facebook use is thought to boost violence. The drop did not occur in areas with high internet usage but average Facebook usage, suggesting it is specific to social media.

I would presume that they also account for the other variables mentioned at the start, but I don't know for sure. Flagging this one as possibly worth reading the original study.

They also give some interesting insights into why this happens. There's nothing new here, but it's interesting in context. Filter bubbles are only part of what's going on.

People instinctively conform to their community’s social norms, which are normally a brake on bad behavior. This requires intuiting what the people around us believe, something we do through subconscious social cues, according to research by Betsy Paluck, a Princeton University social psychologist.

Facebook scrambles that process. It isolates us from moderating voices or authority figures, siphons us into like-minded groups and, through its algorithm, promotes content that engages our base emotions. A Facebook user in Altena, for instance, might reasonably, but wrongly, conclude that their neighbors were broadly hostile to refugees... _Each person nudged into violence, they believe, hints at a community that has become broadly more hostile to refugees. For most users, the effect will be subtler, but, by playing out more widely, perhaps more consequential.

“You can get this impression that there is widespread community support for violence,” said Dr. Paluck. “And that changes your idea of whether, if you acted, you wouldn’t be acting alone.”

In a recent study, Dr. Paluck found that schoolchildren decide whether bullying is right or wrong based largely on what they believe their classmates think. But the students, as shorthand for figuring this out, paid special attention to a handful of influential peers..Facebook’s algorithm... elevates a class of superposters like Mr. Wasserman who, in the aggregate, give readers an impression that social norms are more hostile to refugees and more distrustful of authority than they really are. Even if no one endorses violence, it can come to feel more justifiable.

https://www.nytimes.com/2018/08/21/world/europe/facebook-refugee-attacks-germany.html

Tuesday, 21 August 2018

The pros and cons of a second referendum

The British people have not united around Brexit, or anything like it. They might not even after a final say, I admit; there will be claims of a “stab in the back”. Yet there is, at least, more chance of the country coming together, and of whatever happens in the future carrying more people with it. No one will be able to say they didn’t know what they were voting for and why. If there is a vote for Brexit – whether on the “Chequers” terms (or a variant) or for “hard” Brexit, then, frankly, fair enough.

A new referendum would focus on the three main options facing the country: hard, “no deal” Brexit; a softer “Chequers” version or Canada-style free trade deal; and simply staying in the EU. Voters could be asked for their first, second and third preferences (if they extend that far), and the votes of the losing option redistributed to the top two. It is the fairest way of doing it.

I don't want a second referendum, but I'd rather that than just kowtowing to the delusional idiots we've ended up with. The optimistic points have been made above. More pessimistically :
- Because a decision has to be made, a second referendum will again commit the folly of allowing a simple majority to decide the result. This won't properly settle the matter if the result is again narrow.
- The E.U. won't agree to the Chequers plan.
- Corbyn is as idiotic and quite possibly as malevolent as May, so the Remain campaign will be neutered. The only way to avoid this would be an independent Remain campaign, possibly led from others within Labour. Unless this happens, we'll be well and truly stuck with the current crop of cross-party morons regardless of the result.
https://www.independent.co.uk/voices/second-referendum-brexit-final-say-julian-dunkerton-peoples-vote-nigel-farage-a8498546.html

Philosophy done by someone who really shouldn't

One class consists of invented questions that are often based on unwarranted extrapolations of human experience. They typically include questions of purpose and worries about the annihilation of the self, such as Why are we here? and What are the attributes of the soul? They are not real questions, because they are not based on evidence. Thus, as there is no evidence for the Universe having a purpose, there is no point in trying to establish its purpose or to explore the consequences of that purported purpose. As there is no evidence for the existence of a soul (except in a metaphorical sense), there is no point in spending time wondering what the properties of that soul might be should the concept ever be substantiated. Most questions of this class are a waste of time; and because they are not open to rational discourse, at worst they are resolved only by resort to the sword, the bomb or the flame.

Oh good grief. You, sir, are a baboon. How in the world did you become a professor ? If you're going to take it for granted that the scientific method is the be-all and end-all of discourse, you're going to have to do a lot better than that. You could start, for instance, by considering what you determine to be "evidence" in the first place - and why. You could move on to justifying why you think some things are logical and why others aren't. You could at the very least try and think of some examples of things science would not be able to explain, rather than saying that they're wrong by definition. As it is, this is just another way of saying "I already know what the answer is." Well dammit, you don't. Here, have a read of section 1 :
http://astrorhysy.blogspot.com/2018/05/the-assumption.html

I don't like scientism. Daft idea, little more than intellectual chest-thumping.

https://aeon.co/ideas/why-its-only-science-that-can-answer-all-the-big-questions

Misinformation in the Czech Republic : the lurch to the right is not just because of economics

Ivana Dolezalova is less worried about Russian disinformation than Czech historical amnesia. A recent survey suggested that half of young Czechs had no idea what had happened in 1968. She also sees disturbing parallels between 1970s communist "normalisation" and contemporary Czech politics, which has lurched to the right since the migrant crisis.

"Of course it's taking a different shape, but it could become a kind of authoritarian regime. The problem I have with my compatriots is that lots of them would not mind it," she told me. "Many people, especially in the countryside, will tell you that if Putin was in charge at least there would be order," Ivana said. "The borders would be closed. And the worst thing is they wouldn't mind being closed in."

This is a country with tremendous wealth equality, essentially full employment, a strong economic dependence on the E.U., and absolutely no "migrant" crisis : it has far more protesters than refugees. Wealth equality and high* employment rates are laudable goals, but are useless in the face of... well, I've got at least one (probably two) colleagues who are sympathetic to Trump/Putin and others who believe in astrology and are more worried about shark attacks** than drowning. And we had a genuine Flat Earth sympathiser turn up at an open day. Oh, and for some reason there's a large group of MOND devotees here. Weird place. No stranger than Britain, I suppose...

* Not full. Full means labour shortage, so you get people doing crappy jobs who can't be fired because there's no-one to replace them. Oh, and contrary to predictions, full employment doesn't seem to cause much in the way of rising wages here. I earn less than I did as a PhD student.
** Not in the Czech Republic. That'd be a whole other level.
https://www.bbc.com/news/world-europe-45168062

The Berlin Numeracy test is more useful in the real world than IQ tests

People who score well on these kinds of numeracy tests are also four times more likely to seek help within the first hour of experiencing the symptoms of heart failure – and this decision, in turn, determined their prognosis afterwards. The Berlin Numeracy Test also seems to capture people’s understanding of different investment plans and their capacity to evaluate adverts and understand political polls.

It’s important to note that neither the Berlin Numeracy Test, nor any of these particular decision-making tasks, rely on highly specialised or advanced knowledge beyond what you should learn at a secondary (high) school. But the very basic understanding of risk and uncertainty apparently leads you to become more reflective about the information you consume, creating a more rational and informed worldview. In technical terms, it seems to increase your “metacognition” – your capacity to question your own reasoning and judgements.

The obvious question here is whether understanding statistics alters metacognition or if there's simply a correlation between metacognition and a capacity to understand statistics...

You might assume that the Berlin Numeracy Test simply measures intelligence, given that it relies on a basic command of numbers. But although the two are correlated, Cokely has shown that a capacity to understand risk turns out to be far better at predicting someone’s general decision-making abilities than typical IQ-style questions.

I took the test and was rewarded with gushing praise :

"Congratulations on completing your statistical and risk literacy test!
Your numeracy score is better than about 75-100% of all college educated individuals. Roughly, this means that out of every 100 people who take the test, you will do better than about 90% (90 people) of all other people. This is the highest score one can receive on this test.
Technically, relative to the general population, you are among the most statistically literate in the world.
Based on your score, you are not very likely to experience the extreme difficulty most people have when faced with common types of statistical thinking. However, you should still take care and may want to double check your calculations or seek additional advice when it comes to important decisions involving risk and statistics (e.g., some medical decisions, financial investment, taking consumer debt).

In our uncertain and complex world you are likely to find that your higher levels of risk and statistical literacy are very beneficial and important.
Indeed, your levels of numeracy reflect a skill level that very few people ever achieve… one that is the result of considerable practice.
As the saying goes: "Practice makes perfect.""

That's a nice way to start the day. Obligatory PoTC link : http://astrorhysy.blogspot.com/2015/11/sense-and-sensible-statistics.html

Mind you, I got told off yesterday for poo-poohing the risk of shark attacks. Apparently "8 in the last 10 years" counts as "many". I think the phrase, "oh don't bring your statistics into it" might have been uttered. Sigh.
http://www.bbc.com/future/story/20180814-how-we-should-think-about-uncertainty

Bullshit has always been with us

The first link in the list below is a prime example of historical bullshitting.

Via Michael J. Coffey.

Originally shared by Anne-Marie Clark

Suffragette satire, 1915

"It’s a response to pamphlet entitled Some Reasons Why We Oppose Votes for Women [link below] put out by the anti-suffrage group the National Association Opposed to Women’s Suffrage–the same group that created this gem [link below] we’ve highlighted before warning that giving women the vote would put the government under “petticoat rule.”

See "Some Reasons Why We Oppose Votes for Women" (1894):
https://www.loc.gov/resource/rbpe.1300130c

See the pamphlet talking up fear of "petticoat rule" (ca 1910s):
http://assets.feministing.com/wp-content/uploads/2013/02/antisuffrage.jpg
More on it:
https://www.theatlantic.com/sexes/archive/2012/11/vote-no-on-womens-suffrage-bizarre-reasons-for-not-letting-women-vote/264639/

From:
http://feministing.com/2014/11/03/vintage-feminism-why-we-oppose-votes-for-men/
https://twitter.com/LouisatheLast/status/1026882725909852160

Trump says he can't tell the truth because that would indite him

I think the entire "Presidency" is actually a Magritte joke. He might as well walk around with a big sign saying, "This is not a President" hanging round his neck. "I'm guilty as heck" would also be true, but that wouldn't appeal to the surrealists.

That's the best explanation I can come up with for this whole travesty of a farce.
https://www.bbc.co.uk/news/world-us-canada-45254374

Monday, 20 August 2018

Video game properties in real currency

This is awesome. Don't bother with any second-hand articles, go directly to the site. Delightful. Almost like when Hayne's manuals started branching out into fiction...

To generate a conversion rate from the Skyrim Septim to GBP, USD & Euro, we first had to establish a common ground between our world and the Elder Scrolls universe. We found this common ground in the form of the food items which can be bought and sold in both worlds. Carrots, spiced wine, goats cheese, and many other food items would be the key to generating our conversion rate.

So, we set about collecting both the Skyrim price and the UK price of items as varied as a leg of goat, pheasant breasts, bottles of spiced wine and salmon steaks.

In our currency conversion process, we also had to take into account the cost of producing food in the realm of Skyrim. Nothing is mass produced in this Nord wilderness, so we made the assumption that the value of this organically grown and pastorally-farmed food would be more akin to the organic produce you can buy in UK supermarkets.

And yes, you can view their conversion tables.

https://www.landc.co.uk/video-game-property/

Splitting the brain does not split the person

To try to get to the bottom of things, my team at the University of Amsterdam re-visited this fundamental issue by testing two split-brain patients, evaluating whether they could respond accurately to objects in the left visual field (perceived by the right brain) while also responding verbally or with the right hand (controlled by the left brain). Astonishingly, in these two patients, we found something completely different than Sperry and Gazzaniga before us. Both patients showed full awareness of presence and location of stimuli throughout the entire visual field – right and left, both. When stimuli appeared in the left visual field, they virtually never said (or indicated with the right hand) that they saw nothing. Rather, they would accurately indicate that something had appeared, and where.

But the split-brain patients we studied were still not completely normal. Stimuli could not be compared across the midline of the visual field. Moreover, when a stimulus appeared in the left visual field, the patient was better at indicating its visual properties (even when he responded with the right hand or verbally!), and when a stimulus appeared in the right visual field, he was better at verbally labelling it (even when he responded with the left hand).

https://aeon.co/ideas/when-you-split-the-brain-do-you-split-the-person

Throwing your rubbish into volcanoes is a terrible idea

What could possibly go wrong ? Well, quite a lot of things, obviously, but the video of what actually does happen is rather nice.

https://www.popsci.com/why-dont-we-just-throw-all-our-garbage-into-volcanos

Telling it like it is

I reshare this not for the article, but Dan Weese's commentary. The only point I disagree with is whether we call it "treason" or something else, but I suspect that is a cultural difference in terminology. I further suspect that even now, bridges can be built with Republicans. But not with Trump et al. That is folly. But that's enough from me.



Aw criminy, not yet another pouring out of a jeroboam from where the grapes of wrath are stored. I, too, find the Treason word inapplicable to Donald Trump, for treason is a military crime, not a civilian crime, applicable only in time of war.

I was once a Republican. I was also a soldier. I ceased being a Republican about the time Reagan sold arms to our enemies and lied about it all. I am an identitarian Democrat who assumed that role most unwillingly.

Though I do not call Trump a traitor, I believe Donald Trump is conspiring with the enemies of the United States. I have solid facts to back that allegation. Would you care to dispute it? Of course you won't and you didn't on your blog, either. How many guilty pleas has the Special Counsel gathered in the course of his investigation? Let's review, shall we?

https://www.washingtonpost.com/news/politics/wp/2018/07/13/a-summary-of-the-fruit-of-the-mueller-investigation-to-date/?utm_term=.b42fc2c33180

I will now take issue with this notion wherein the American Middle Class has been under attack for a long time now.

It is true, your language is policed: you can't use the N Word and you've had to quit telling racist jokes and other deep and abiding infringements upon your quotidian speech patterns.

And, regrettably, institutions have been perverted from the happy days of yore, when women and black people knew their place and queers were fired from their positions - see, I'm old enough to remember those bad old days if you are not.

Which national symbols are now disdained? I remember a bitterly cold day in Kitzingen Germany, when I participated in burning a flag. Of course, we were burning it in the First Sergeant's hibachi, in accordance with military flag disposal protocol. Friends of mine are buried in Arlington, men who died for the rights and freedoms accorded to American citizens, including the right to disdain the national symbols. And if you don't like it, I believe that to be an unpatriotic response, deeply offensive to this veteran, who will be buried under an American flag.

The American middle class brought most of its misfortunes upon itself. The trade unions had brought about the 40 hour week and the abolishment of child labor, the conservatives turned socialism into a dirty word. Now there is no American middle class.

There will be no compromise with such as Trump nor with those who strive to soft-pedal his manifest crimes, in hopes the debate will be rendered civil and conservatives can again attempt to browbeat their opponents with supercilious condemnation of the use of words such as Traitor. Donald Trump is the abject servant of Putin and the Russian mafia and there are no two ways about that.

Isaiah Berlin had this to say in his essay Two Concepts of Liberty:

"In the end, men choose between ultimate values; they choose as they do, because their life and thought are determined by fundamental moral categories and concepts that are, at any rate over large stretches of time and space, a part of their being and thought and sense of their own identity; part of what makes them human. It may be that the ideal of freedom to choose ends without claiming eternal validity for them, and the pluralism of values connected with this, is only the late fruit of our declining capitalist civilization: an ideal which remote ages and primitive societies have not recognized, and one which posterity will regard with curiosity, even sympathy, but little comprehension. This may be so; but no sceptical conclusions seem to me to follow. Principles are nor less sacred because their duration cannot be guaranteed. Indeed. the very desire for guarantees that our values ire eternal and secure in some objective heaven is perhaps only a craving for the certainties of childhood or the absolute values of our primitive past. 'To realise the relative validity of one's convictions ,said an admirable writer of our time, 'and yet stand for them unflinchingly, is what distinguishes a civilised man from a barbarian.' To demand more than this is perhaps a deep and incurable metaphysical need; but to allow it to determine one's practice is a symptom of an equally deep, and more dangerous, moral and political immaturity."

http://ashesblog.com/2018/08/19/dear-bill-maher/

You are more valuable than your work

The struggle to convince people that they don't have value unless they work continues. A UBI, by the sounds of it, simply wouldn't work here - the social culture of work is too ingrained (I don't know for sure if it would work elsewhere, but I would definitely like to see more trials). It just seems to me like a terrible waste of mortality to decree that the only purpose of existence is economic growth.

Contrary to expectations, an objectively high standard of living does not necessarily result in a high Subjective Well-Being (SWB). Koreans may have everything from BMWs to remote-control toilets, but their life satisfaction has been well below the average for OECD countries since 2013. President Moon Jae-in, who ran for office on a 'People First ticket, is campaigning to close the gap.

‘Worabel’ is Korean shorthand slang for ‘work-life balance.’ South Koreans famously put in some of the longest working hours on the planet; according to the OECD more than 20% of workers exceed 50 hours a week. And the average employee barely takes half of their leave days.

The resulting stress contributes to a nation with a shockingly high number of suicides. It is also a factor in the country’s record low birth rate, as working mothers also carry the bulk of parenting responsibilities.

One of the biggest reforms so far is the reduction of the maximum workweek from 68 to 52 hours. It’s not just a suggestion; employers who don’t follow the law could face up to two years in prison. The government has also mandated a dramatic increase in the minimum wage along with a host of supporting measures—parental leave, subsidies for childcare, reduced mental healthcare costs, increased pensions, and an extension of the previous administration’s Happiness Fund, which helps citizens pay off certain kinds of personal debt.
http://www.bbc.com/capital/story/20180814-can-you-introduce-laws-to-make-people-happier

Philosophy is not for stupid people

This is what happens when you let an idiot do philosophy.
https://www.bbc.com/news/world-us-canada-45241838

Personality conflict in the dinosaur extinction debate

While ostensibly about what killed the dinosaurs, you'd be better off looking elsewhere for that. This one is really much more focused on the personalities, hence it's going in Philosophy of Science.

Whatever you think about Keller, her biography is amazing. If it's ever published in full I'd buy it without hesitation. Put it like this : if it included the phrase, "... and then I was kidnapped by pirates", nothing would be amiss.

I must confess to a bias against Keller though. A long time ago I read Richard Muller's "Nemesis", which includes a lot about the development and reception of the impact theory. Best philosophy of science book I ever read.
http://astrorhysy.blogspot.com/2016/05/nemesis.html

There is a popular view of academia as somewhere where there are stuffy old professors who are constantly trying to stifle the ideas of the young whippersnappers who are in turn trying to steal their jobs and overthrow the dogmatic establishment. I've worked in three different institutions in three different countries and talked to people from God-knows how many others, and this just isn't true. It's easy to play the victim because the idea of a entrenched idea has a certain narrative plausibility. Of course old people don't like changing their minds, that's what old people are like, isn't it ? All those lucrative grants, no-one's going to want to the rock the boat, right ?

Wrong. It's the tenured professors who have the most freedom and correspondingly crazy ideas of all. Mad as hatters, some of 'em. If anything it's the younger generation (I include myself in that demographic) who are more reluctant to change because they haven't witnessed established ideas being overturned, and haven't had the time to explore the existing ideas in full.

That is not to say that the popular narrative version never happens or that young people never have any good ideas, because that is equally stupid. What I've witnessed is simply more of a full spectrum than the popular version suggests. Sure, you may get the odd dogmatic older idiot here and there. And yes, you get the occasional plucky young underdog. But the plucky underdog can be and is usually wrong, and sometimes an undeservedly arrogant SOB. The dogmatic professor can be adept at letting all sides express their opinions, even ones he thinks are nonsense, while the underdog tries to shout out dissent. The contrarians, who actually tend to be much older in my experience, can be ferociously intelligent but also wilfully ignorant. People can be underhand, political, and outright abusive. And yet, most of the time - the vast majority I would say - they're just trying to get on with the job as honestly as they can. The model of competitive collaborations is hardly perfect - you won't get a perfect institution for trying to get subjective humans to reach an objective conclusion, not ever - but it's by and large enormously successful at preventing groupthink and other routes to a false consensus.
http://astrorhysy.blogspot.com/2015/10/false-consensus.html

Rant almost over. The only other point I would make is that the history of science is awash with cases where the established view was overturned very rapidly. Scientists tend to get excited only when you have both good evidence and a plausible mechanism to explain it. If you don't have that they'll be stubborn as hell, and for good reason : there are huge numbers of competing crackpot fringe theories out there. I really wish people with crazy ideas would understand two things : how many other people with crazy ideas there were, and that the mainstream idea is attacked just as viciously as the rest. That is, in fact, the principle reason people believe in it over the swarming multitude of alternatives.
http://astrorhysy.blogspot.com/2015/06/consensus-and-conspiracy.html

Righto, time for some quotes from the article :

These theories fell by the wayside when, in 1980, the Nobel Prize–winning physicist Luis Alvarez and three colleagues from UC Berkeley announced a discovery in the journal Science. They had found iridium—a hard, silver-gray element that lurks in the bowels of planets, including ours—deposited all over the world at approximately the same time that, according to the fossil record, creatures were dying en masse. Mystery solved: An asteroid had crashed into the Earth, spewing iridium and pulverized rock dust around the globe and wiping out most life forms.

Muller's book describes how initially they were convinced it was a supernova until they realised there was a fault in the experimental procedure.

News articles described scientists rallying around Alvarez’s theory in record time, especially after the so-called impacter camp delivered, in 1991, the geologic equivalent of DNA evidence: the “Crater of Doom,” a 111-mile -wide cavity near the Mexican town of Chicxulub, on the Yucatán Peninsula. Researchers identified it as the spot where the fatal asteroid had punched the Earth. Textbooks and natural-history museums raced to add updates identifying the asteroid as the killer.

Maybe after the impact crater, but I was never taught it as anything like a "fact" in school or in any books I read. Which was quite a lot, that being prime, "small boy with interest in dinosaurs" era for me.

Impacters’ case-closed confidence belies decades of vicious infighting, with the two sides trading accusations of slander, sabotage, threats, discrimination, spurious data, and attempts to torpedo careers. “I’ve never come across anything that’s been so acrimonious,” Kerr says. “I’m almost speechless because of it.” Keller keeps a running list of insults that other scientists have hurled at her, either behind her back or to her face. She says she’s been called a “bitch” and “the most dangerous woman in the world,” who “should be stoned and burned at the stake.”

I personally know at least one academic who claimed he wanted to shoot a rival, but I think he was joking... well, probably only half-joking.

Ad hominem attacks had by then long characterized the mass-extinction controversy, which came to be known as the “dinosaur wars.” Alvarez had set the tone. His numerous scientific exploits—winning the Nobel Prize in Physics, flying alongside the crew that bombed Hiroshima, “X-raying” Egypt’s pyramids in search of secret chambers—had earned him renown far beyond academia, and he had wielded his star power to mock, malign, and discredit opponents who dared to contradict him. In The New York Times, Alvarez branded one skeptic “not a very good scientist,” chided dissenters for “publishing scientific nonsense,” suggested ignoring another scientist’s work because of his “general incompetence,” and wrote off the entire discipline of paleontology when specialists protested that the fossil record contradicted his theory. “I don’t like to say bad things about paleontologists, but they’re really not very good scientists,” Alvarez told The Times. “They’re more like stamp collectors.”

To be fair, Muller's book also has several criticisms of Alvarez. It also gives credit where credit is due, which is often.

But not by everyone. “Normally, when people get attacked and given a hard time, they leave the field,” Keller told me. “For me, it’s just the opposite. The more people attack me, the more I want to find out what’s the real story behind it.” As Keller has steadily accumulated evidence to undermine the asteroid hypothesis, the animosity between her and the impacters has only intensified. Her critics have no qualms about attacking her in the press: Various scientists told me, on the record, that they consider her “fringe,” “unethical,” “particularly dishonest,” and “a gadfly.” Keller, not to be outdone, called one impacter a “crybaby,” another a “bully,” and a third “the Drumpf of science.” Put them in a room together, and “it may be World War III,” Andrew Kerr says.

My problem is that having looked at the evidence from contrarians in my own field, I've ended up concluding that most of their ideas are utterly wrong and founded on little (or in some cases zero) evidence. I mean senior professors here, not outside cranks.

The greatest area of consensus between the volcanists and the impacters seems to be on what insults to sling. Both sides accuse the other of ignoring data. Keller says that her pro-impact colleagues “will not listen or discuss evidence that is contrary to what they believe”; Alan Hildebrand, a prominent impacter, says Keller “doesn’t look at all the evidence.” Each side dismisses the other as unscientific: “It’s not science. It sometimes seems to border on religious fervor, basically,” says Keller, whose work Smit calls “barely scientific.” Both sides contend that the other is so stubborn, the debate will be resolved only when the opposition croaks. “You don’t convince the old people about a new idea. You wait for them to die,” jokes Courtillot, the volcanism advocate, paraphrasing Max Planck. Smit agrees: “You just have to let them get extinct.”

https://www.theatlantic.com/magazine/archive/2018/09/dinosaur-extinction-debate/565769/

Review : Pagan Britain

Having read a good chunk of the original stories, I turn away slightly from mythological themes and back to something more academical : the ...