Exist sub-species?????

[John Grehan]

 >Doug Yanega  wrote

 Is there anything
>gained by resisting the PSC trend, or should we simply go with it and
>elevate all extant *diagnosable* subspecies to species rank, since
>diagnosability is the sole practical criterion?

I will reiterate a position I have mentioned before that I realize goes against
the grain with most systematists, and that is both the BSC and the PSC are
actually essentialist definitions of a spatiotemporally unrestricted
essence. They both
appear to be re-statements of an  Aristotelian universe (meaning that such
concerns have not advance beyond the philosophy of the ancient Greeeks).

John Grehan