Some Other Interesting Stuff
1. Check out this TED Talk from Rob Reid. He points out that the number of people that would kill all humans on Earth is likely more than zero, and as genetic editing gets cheaper and easier to access, the prospect that one of those people could succeed grows.
2. While there is variation between countries, one study found that almost everywhere people were more likely to return a wallet with money in it than without.
3. This is an image of the same coin with different rotations. In one the number appears to be concave, and in the other convex. I assume this is because our brain expects the light to be coming from above... Credit belongs to @AkiyoshiKitaoka
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