[CarolinaGuitarman]

"If anything, your quote from Popper indicates he is leery of "natural selection" as explanatory."

Only if you ignore the plain meaning of the words he said;

(KP)
"It raises detailed problems in many fields, and it tells us what we would expect of an acceptable solution of these problems. I still believe that natural selection works this way as a research programme. Nevertheless, I have changed my mind about the testability and logical status of the theory of natural selection; and I am glad to have an opportunity to make a recantation. My recantation may, I hope, contribute a little to the understanding of the status of natural selection."

Then you say,

"Which way did he change his mind? Doesn't really matter."

...And pretend you didn't see the plain words where he says that Natural Selection IS testable and is NOT a tautology. You are either incapable of reading plain simple English words or you are so obsessed with saving your Biblical fairy tale that lying doesn't mean anything to you.

[Fester Chugabrew]

. . . he says that Natural Selection IS testable and is NOT a tautology.

Read it again. Slowly and carefully. Then, as you're ready to hit the sack, kiss Darwin's bust nighty night. He'll appreciate it, and so will the rest of his followers.