jrg13 at psu.edu
Thu Sep 10 11:30:15 EDT 1998
>I would think that the best empirical evidence of purpose in butterfly wings
>would be the huge cost associated with metamorphosis. Surely there must be
>a good reason for this developmental miracle. What the primary purpose is
>can only be speculated, but there is good evidence that finding and
>attracting mates, dispersing to new plants and locations, solar energy
>collecting/warming, and avoiding predation are all at the top of the list.
It might be a bit circular to say that "surely" there must be a good
wings exist its hard to say that there isn't a "good reason" (whatever that
mean in the natural world).
Wings might function in finding mates, dispersing, warming, avoiding
are empirical observations. They say nothing, however, about purpose.
Sincerely, John Grehan
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