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Evolution, Evolution, Evolution

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EVERYTHING Is Explained by Evolution ...At least everything human.  And I actually think pretty much everything that's alive, including plants, "germs," bugs and irresistible puppies are all fully explainable by evolution. I've bought into the idea that if a human trait - even a weird one - is around today, it was survival-positive at some point in our evolution, thus became part of what the human race is.  For instance  schizophrenia , not a trait you might consider all that valuable these days.  But back there in deep pre-history, the schizos probably were very effective shamans, and a tribe with a really wild shaman had survival advantages.  You can write the scenario as well as I can.   Could'a Been Us In one of my fav magazines NewScientist writer  Kate Ravilious   put together a fine piece ( 07 November 2011)  expanding on current thinking on this " EVERYTHING Is Explained by Evolution" bit.  She summarizes (and adds to) the work o