The idea of species is quite meaningless in any case. Boundaries are arbitrary, genetic similarity can arise by chance, interbreeding is situational, reproducti

The idea of species is quite meaningless in any case. Boundaries are arbitrary, genetic similarity can arise by chance, interbreeding is situational, reproductive isolation is rarely perfect, populations are vague; of the different definitions of species surveyed in the article, the "cohesion"-based one is the closest to admitting that taxonomy is a rough model of cohesive genealogical and evolutionary patterns.