Thanks for posting...interesting.
“Speciation occurs when populations or sub-populations are isolated (genetically) from their sisters and brothers over a long period of time.”
Yes, nobody disputes that, but the problem is that evolutionists extrapolate this speciation beyond what can be observed, and beyond the observable mechanisms of heredity and natural selection. For example, it’s not controversial to say that Chimps and Bonobos speciated from a common “proto-chimp” ancestor when they became geographically isolated. We can observe the same type of speciation starting to occur anytime we selectively breed animals. However, evolutionists extrapolate that to think that somehow, over a long period of time, the same mechanism could change a primate into a human, disregarding the fact that there is no real evidence that humans and primates ever had a common ancestor to speciate from.
In evolution, the common ancestry is just assumed a priori, and it’s just a matter of them figuring out with some hocus pocus speculation, how far back the common ancestor would have to be to account for the divergent genetics and morphology. Nevermind that they cannot prove common ancestry or even agree on the exact mechanisms of how an organism could gain or lose chromosomes, among other problems with such speculation.
So if we move some people from Indiana over to a remote region of the Mojave desert, they will "speciate" into monkeys?