[Sciolist]

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1) Inability to sleep at will: I've always thought this really sucked. It seems to me that people would be more productive if they could choose when to sleep. You'd still get tired if you didn't do it often enough, and pass out if you chose to stay up for way longer than you should, but you wouldn't have to lie in bed staring at the ceiling before a big day. It'd be more like going to the bathroom and less like breathing.

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Sleeping at will and a complex, powerful brain don't jive. If your body can't take the time to shut down correctly with your brain on full tilt thinking and dreaming mode, you're going to hurt yourself.

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Why? Is sleep important in theory, or just for the way that our brains evolved?