Dirty Penguin
Master Of Ceremony
Look, it's been explained to you several times: the fuzzy-edged nature of species is not a reflection of biology's inability to resolve them; it's intrinsic to their very nature.
Others have also pointed out that the species concept is a man-made one. In the real world living organisms exist in populations, which differ from each other genetically to varying degrees. As a rough rule of thumb, we say that if the members of two such populations can interbreed, and their offspring are fertile, they are the same species; if they can't, they're not. But the process of divergence from the first state to the second has an infinite number of gradations, and none of these constitutes a sharp boundary.
Well said.... :clap