If sleep makes one vulnerable then surely it would be evolved out to some extent. This seems to be in line with what you are saying here.
But in many cases one is less vulnerable because of staying still and quiet in times when ones vision is inappropriate for the light conditions.
To give a real world example: when all those people were blinded by that meteoric shower which were the ones who got killed by Triffids, the ones who stayed in thier homes or the ones that flailed around in the street?
Poor vision + predators with better vision = bit part.
Edited by Larni, : No reason given.
The above ontological example models the zero premise to BB theory. It does so by applying the relative uniformity assumption that the alleged zero event eventually ontologically progressed from the compressed alleged sub-microscopic chaos to bloom/expand into all of the present observable order, more than it models the Biblical record evidence for the existence of Jehovah, the maximal Biblical god designer.
-Attributed to Buzsaw Message 53
Moreover that view is a blatantly anti-relativistic one. I'm rather inclined to think that space being relative to time and time relative to location should make such a naive hankering to pin-point an ultimate origin of anything, an aspiration that is not even wrong.
Well, Larni, let's say I much better know what I don't want to say than how exactly say what I do.