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9 yıl öncediscuss

Totally agree. I was disappointed to see the article follow the trend of framing everything in life around the notion of productivity. But one can only be thankful that poor mental health is correlated with poor productivity - it means the evolutionary pressure for modern capitalist society is at least acting in the right direction...

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9 yıl öncediscuss

Agreed, I think this is an overly-simplified explanation. Skimming the paper it looks like the crucial thing which introduces bias is precession of the coin.

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9 yıl öncediscuss

True, but the GP suggested that you can find the absolute reference frame by looking at the relative velocities of the dots (independent of any force measurements).

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9 yıl öncediscuss

>Rotation is inherently about different particles moving at different velocities. This is why there is an absolute reference frame for it: it is defined by these differences, so by reducing them to zero and making every particle in the ball have the same velocity, we can reach the "absolute".

Imagine the ball is floating in space, and you are watching things through a camera fixed to the ball. To you, the two dots will always appear stationary with zero relative velocity. So there is no way to determine your absolute reference frame.

Now suppose you are watching through an external camera, and suppose you observe the dots having a relative velocity. Is the ball spinning, or is the camera orbiting around the ball? Again, there is no way to tell.

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9 yıl öncediscuss

> The real problem with kraits is that they enter homes in the dead of night and bite people in their sleep.

A krait in the bed is the premise for the excellent short story "Poison" by Roald Dahl.

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9 yıl öncediscuss

It tastes delicious and has a fantastic aroma. It's quite complex. I'd put it somewhere between vanilla, marzipan and cinnamon. I've tried it with chocolate, almond, vanilla, fruit, cream, custard with good results. It also apparently goes well with fish (haven't tried it yet).

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9 yıl öncediscuss

In fact unless I'm missing something the units don't match up:

  Total stock market value has units $
  GDP has units $/year

So expressing their ratio as a % is misleading.

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9 yıl öncediscuss

The question asks for positive solutions, which turns out to be a bit harder!

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9 yıl öncediscuss

24 Sep 2014 (hover over the title in https://xkcd.com/archive/). So, less than 5 years ago!

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9 yıl öncediscuss

> He can go left and come out right to demonstrate that he knows the secret - without revealing the secret

Correct

> The reporter would still not know how he did it

Correct

> and could not pass his conviction on to the judges

Incorrect, in this case he could pass on his conviction to the judges simply by showing them the tape where Mick goes in left and comes out right in a single unbroken take. Such a tape cannot be faked by the fake reporter.

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9 yıl öncediscuss

People get by with a lot less. The median household income in London was £39k in 2013 [1]

[1] https://data.london.gov.uk/apps_and_analysis/gla-household-i...

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10 yıl öncediscuss

> More evenings with no sleep, coupled with a 4 hour commute (both ways) means she is exhausted.

This stood out to me - I cannot imagine the detrimental effect that 8 hours commuting per day has on one's mental health. I'm glad she was able to change jobs.

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10 yıl öncediscuss

I totally agree. In fact the systems studied by social sciences are so complex that the notion of an experiment in the classical sense (hypothesis, observations, repeatability, etc) can break down completely. This is partly why the concept of qualitative research exists [1]. Some physical scientists look down on such research methods; this is a category mistake on their part.

[1] https://en.wikipedia.org/wiki/Qualitative_research (not a great article IMO but I lack the experience to give a better reference)

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10 yıl öncediscuss

The surface is the data. E.g. the ridership for Lafayette Street is the upper line of the green area, minus the lower line of the green area. This is called an area chart and is used to show cumulative data and how each part contributes to the whole. In this case it shows the total NYC ridership increasing from ~7000 to ~18000 (units are unclear!), while e.g. the Central Park West ridership has remained approximately constant.

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10 yıl öncediscuss

OTOH, the terrible truth is that it was necessary to order thousands of soldiers to their almost-certain deaths in order to win the war, and without a disciplined army this would not be possible. This says something about the value of discipline (in war or maths!) even when it's not obviously in your personal interest.

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10 yıl öncediscuss

https://en.wikipedia.org/wiki/Prayer_of_Saint_Francis

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10 yıl öncediscuss

I'm sure Huang didn't consciously intend to be sexist, but unfortunately a culture of "off-color remarks" is what enables sexism. Senior, highly visible professionals should be particularly aware even of their off-hand remarks, as they have a disproportionate influence over the culture of their company and sector.

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10 yıl öncediscuss

During a mock execution the victim actually believes they are about to die.

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10 yıl öncediscuss

>Walking anywhere in London or navigating the subway during rush hour means having to make a mad, dodging, aggressive dance against an oncoming tide of people, many of whom seem oblivious to Britain’s long tradition of walking on the left.

I feel obliged to point out that this 'long tradition' only exists on escalators in the London Underground. Anywhere else in the country (or London for that matter) we walk on whichever side we feel like.

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10 yıl öncediscuss

However this comes with the interesting caveat that the English upper classes don't like to appear too French, especially when it comes to pronunciation, where using the foreign pronunciation can be considered rather lower class. This is reflected in class shibboleths such as:

Upper class: valet [val-ett], fillet [fill-ett]. Middle class or lower: valet [val-ay], fillet [fill-ay].

Upper class: claret [clar-ett] (from French clairet). Middle class or lower: Bordeaux.

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