Apogs,
Thanks for the reference to Jody Hey, he states
When Darwin showed that life evolves, and that it does so by natural selection, he transformed our understanding of living things. But the very question Darwin addressed-the nature of species-continues to pose an awkward conundrum for biologists. Despite enormous efforts by a great many scholars, biologists still cannot agree on how to identify species or even how to define the word "species."
I totally understand your point, I am on board with the gradual evolutionary change over time, but I agree with you there is a problem in the world of science in identifying species. There are well known flaws in evolutionary biology.
Thank so much for bringing this perspective to my attention, very interesting indeed.
Kate xx