People are advised not to do a number of things: pick their noses, remove wax from their ears, squeeze out acne, puncture blisters, scratch mosquito bites, scratch healing abrasions, pick dried blood off their surfaces, scratch all sorts of things, etc.
Some of these make more sense than others, but I am still wondering: it there some evolutionary purpose in the fact that most people want to do most of the above? For example, why does healing skin itch in the first place?
Tuesday, October 06, 2009
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