Some people are afraid of spiders, snakes, great heights, and so on. We encounter these people every day, and although we may mock them for their fear, deep down, we respect the fear. This is because these fearful attitudes show a distinct evolutionary advantage over the sort of attitudes that cause one to, oh, say, want to pick up rattlesnakes and cuddle them and pull their itsy-bitsy rattle-wattles. Over millions of years, there've been folks who looked at spiders and went "ACK! Getitawayfromme!" and others that looked at teeth glistening with venom and went, "Ooh....shiny", and I think we can all come to our own conclusions abiut which group was more likely to contribute to the gene pool. I'm not sure at what point primitive man's survival was aided by not standing up to give a speech in front of the tribe, but hey.
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