[ExI] IQ and beauty
johnkclark at gmail.com
Sun Oct 4 16:16:36 UTC 2015
On Sat, Oct 3, 2015 Dan TheBookMan <danust2012 at gmail.com> wrote:
> Reproductive and selective mechanisms are also imperfect, no?
Yes, nothing about Evolution is perfect.
> And what amount of what's considered beautiful is heritable?
Yes, if it were perfect peahens would feel that the most beautiful tail of
a peacock was the one that was the most aerodynamic
but they don't. The gene for large gaudy tails and the gene to prefer to
large gaudy tails
are both under Evolutionary pressure, and in this extreme case it looks
like the 2 genes have gotten into a positive feedback loop
. When such loops end, and
positive feedback loop
s never last very long, the results are seldom pretty. I think peacocks
(and peahens) are headed for extinction.
John K Clark
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