re Dedy's comment re sleep:- I would have to concur, given evidence from past posts of that member. But , aside from that, I think I read once about a study which showed that humans who slept in caves had an entirely different waking-sleeping cycle by comparison to those who slept outdoors, something like 36 hours asleep, 12 hours awake or the other way around. Not that this means palaeolithic man slept in caves, they seem actually to have used them mainly for rituals/paintings. And then there was some vague mention of 1 or 2 researchers who spent lengthy times(years?) in caves, who had some unusual experiences. Google isn't adequate for searching for such unusual aspects. Does anyone have some info re this?

For my own part, my personal experience tends to show that sleeping from dusk to dawn was not a likely occurrence in palaeo times, since if I do sleep from fall of night, I usually wake up well before dawn. Plus, there's the fact that some humans, myself included(despite some shortsightedness), have very good night-vision.

Geoff



 		 	   		  
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