Monday 7 April 2014

Links Monday 7th April

"... if children of two or four can be expected to read the nonverbal cues and expressions of children not yet old enough to talk in order to assess whether there is consent, what excuse do full grown adults have?" Link

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An interesting way to think about it:

"If higher-paying professions (e.g. finance and management) generate less positive net externalities than lower-paying professions (e.g. public service and education) taxation may enhance efficiency.

In other words, marginal tax rates may be Pigouvian taxes on externality-generating activities." Marginal revolution (I'm on another binge there, so a few more economics-type articles follow)

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"The 2x2 box now compared crime data in the cities that banned handguns against crime data in the cities that didn’t. In some cases, the numbers, properly calculated, showed that the ban had worked to cut crime. In others, the numbers showed it had failed.

Presented with this problem a funny thing happened: how good subjects were at math stopped predicting how well they did on the test. Now it was ideology that drove the answers. Liberals were extremely good at solving the problem when doing so proved that gun-control legislation reduced crime. But when presented with the version of the problem that suggested gun control had failed, their math skills stopped mattering. They tended to get the problem wrong no matter how good they were at math. Conservatives exhibited the same pattern — just in reverse." Vox

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"Basically, no one knows if [high-frequency trading] is good or bad. There are two reasons for this. The first is that no one really knows what HFT does to markets. The second is that no one really knows what is good or bad for markets." Link
A long excerpt from the book is here.

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"Sloths were hanging everywhere - from the trees in her back garden, from the bars on the living room window, and anything else they could hold on to. "Two female adults sat on the TV stand and the babies would climb on the matriarchs." One very young sloth, known as Lola, would pop up in the strangest places, like the stove top - though not when the gas was alight, luckily." BBC

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This is utterly shameful and shocking. Police are willing to invest "several months of undercover operations" in order to prosecute sex workers and embarrass clients (note, no legal penalty for them). Imagine if we saw similar fervour in investigating crimes with actual victims... "Heavy fines issued to sex workers"

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“Sharing… strains relations between people. Consequently, many foragers try to find ways to avoid its demands …. Students new to anthropology... are often disappointed to learn that these acts of sharing come no more naturally to hunter- gatherers than to members of industrial societies.” Link

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"Between 1815 and 1914 at least 82 million people moved voluntarily from one country to another, at a yearly rate of 660 migrants per million of the world population. The comparable rate between 1945 and 1980, for example, was only 215 per million." Marginal revolution. Book is here

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