To be fair, the fact that children have undergone a drastic fall in sleep time is not a good thing, and arguably, we can see that from evolutionary reasoning. B

To be fair, the fact that children have undergone a drastic fall in sleep time is not a good thing, and arguably, we can see that from evolutionary reasoning. But yes, I do agree with you that applying such arguments to humans is dangerous territory. My thinking is that evolutionary arguments should be somewhat trustworthy concerning humans and sleep because there's no evidence that we've found anything to replace sleep in humans. I think that the idea that caffeine could be an effective replacement for sleep silly because caffeine is something animals would have evolved to secrete if it was beneficial for them to do so. That said, if we found an intervention that significantly increases people's sleep quality and efficiency or to mimic all the benefits of sleep in waking humans then yes evolutionary arguments about humans and sleep go out the window.