[allmendream]

Does one need to directly observe erosion grinding out the Grand Canyon for one to know that erosion is both necessary and sufficient to explain how the Grand Canyon formed?

According to our Flood “geologists” we apparently do!

So even if you don't accept that bonobo chimps and pan chimps were once a single population, what flaw do you see in the theoretical model whereby a barrier would cause two populations of the same species to accumulate different changes?

Where in that theoretical model that you don't seem to understand is the necessity for a “freak” to find a “freak” mate?

Didn't we already go over this a hundred posts ago when you quoted what you thought was a “gem” from some other poster who said every change would have to happen independently in both male and female and those two would find each other?

Did you not learn anything from that previous conversation?

[reasonisfaith]

Regarding the “previous conversation,” I think the discussion didn’t progress beyond the problem presented.

At this point, your argument is dependent on the following proposal: that evolution causes the species of individuals to change into a different species, while at the same time remaining the same species in order to reproduce.

Are these, finally, the long lost transitional forms? Individual animals who are two species at the same time?