Quote:
Originally Posted by Appocomaster
Guess which animals died? those which couldn't sleep safe.
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Yeah but due to evolution being such a high turnover process (I like the way I phrased that) new predators arise which make those previously safe ways of sleeping unsafe. I suppose adaptation to an even safer way of sleeping (although I wouldn't be sure on how repeatable this would be) would be simpler but surely something without sleep might spontaneously emerge once every 354 million years?