Forget cultures, can't you tell from this guy's tone that he really knows what's up, while you and the authors don't? Clearly, depriving lab creatures of sleep

Forget cultures, can't you tell from this guy's tone that he really knows what's up, while you and the authors don't? Clearly, depriving lab creatures of sleep and observing the negative effects is enough to conclude everyone is the same and needs 8 hours of sleep. No more, no less. It's a hard number because it's science. I guess my body telling me it's good for me that I take a nap after lunch is wrong.