Let’s say we are born with such a predisposition—that humans, like bees, are drawn instinctively to flowers. It’s obvious what good it does bees to be born liking flowers, but what conceivable benefit could such a predilection offer people? Some evolutionary psychologists have proposed an interesting answer. Their hypothesis can’t be proven, at least not until scientists begin to identify genes for human preferences, but it goes like this: Our brains developed under the pressure of natural selection to make us good foragers, which is how humans have spent 99 percent of their time on Earth. The
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