Why do we sleep?
hahn at newshost.lds.loral.com
Mon Mar 7 12:44:02 EST 1994
In article <2lc1mj$89j at auggie.CCIT.Arizona.EDU> robertd at argon.gas.uug.arizona.edu (Robert Dejournett) writes:
> I think you all are missing the key issue, i think that animals sleep
> for evolutionary reassons; those with good day vision can't do much at night,
> so they 'shutdown', oposite for those nocternile things. You notice that
> sponges and clams and other 'lower' animals don't sleep.
Any theory of why we sleep would have to account for the dolphins, who
apparently sleep half their brains at a time. If sleep were only because
of day or night vision, why would dolphins have such an elaborate mechanism
to insure constant alertness when they could just as easily have discarded
| (V) | "Tiger gotta hunt. Bird gotta fly.
| (^ (`> | Man gotta sit and wonder why, why, why.
| ((\\__/ ) | Tiger gotta sleep. Bird gotta land.
| (\\< ) der Nethahn | Man gotta tell himself he understand."
| \< ) |
| ( / | Kurt Vonnegut Jr.
| | |
| ^ |
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