Well, that last makes sense to me. After all, humans would logically have different evolutionary pressures than chimps--aren't we also longer-lived, with more time between generations? All things considered, I'd be surprised if we didn't evolve slower.
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Gillian
"Now everyone was giving her that kind of look UFOlogists get when they suddenly say, 'Hey, if you shade your eyes you can see it is just a flock of geese after all.'"
"You can't erase icing."
"I can't believe it doesn't work! I found it on the internet, man!"