Pete, you have a good argument. Names are important TO US! But the
designation of "Sub-species" is important to the understanding of
evolution. Individuals from a "Mother Species" go off and leave the
nest. They develop, if they are to survive, characteristics not formerly
needed: harder percs, different colors, more space inside. It is these
sub-species, the wandering children, who will be the parents of new
species, perhaps (and assuredly given enough time) new genera, new
families.
        It is clear to me that, without sub-species, evolution grinds to a
halt.
        Art