On Mon, 7 Aug 1995 23:07:31 -0500 you wrote to Art Chadwick:
SC>I think you have a misconception of evolutionary theory. The
continuing
>presence of Drosophila sp. on the Hawaiin Islands is not evidence that macro
>evolution has not occured. There is no a priori necessity for a putative
>transitional species to become fully extinct during its putative evolution
>into a new species, genus, whatever. If Drosophila had mutated into a new
>genus (and not just into a new species), how would you know it?
Again, surely the burden of proof is not to show that something has
*not* occurred, but to show that it *has* ocurred?
God bless.
Stephen
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