Hi torri,
The number of mutations is 'virtually infinite' for all practical purposes. I've got 37 trillion cells in my body, each of which has 6 billion candidate sites for mutation. All of these cells are constantly dividing and replicating; even if you have vanishingly small error rate in cell copying, say 1 error in a million, that still results in vast numbers of mutations. And I am just one individual in one species; multiply that up by the number individuals across populations across species across geological time scales and you are going to get unfathomably big numbers. Infinite for all practical purposes.
Quite so. He’s also though locked in to some circular reasoning that I took the time to correct a while ago, but that he just ignored – presumably so he could return to the same mistake.
His thinking is something like: a human being is a phenomenally complex thing. The chances of it arising by chance are unfathomably small. Therefore god.
It fails obviously in its premises in any case because (as you’ve explained) he hugely underestimates the number of opportunities for mutations, because evolution works incrementally, and because the interactions of mutations with their environments is anything but chance.
At its heart though there’s the deeper problem of circular reasoning. It assumes both that our (and presumably other) species were god's plan all along – ie, a top down approach – and that the same god is the only plausible option for his own plan to be achieved. That is, the “argument” requires there to
be god in order to
demonstrate god.
It’s tortuous stuff that disappears in a puff of smoke immediately you grasp that evolution works bottom up rather than top down – it neither knows nor cares which species will appear along the way.
Wouldn’t it be great if he responded to this with, “Ah, I see now where I’ve gone wrong. Thank you for correcting me. I won’t make that mistake again.”
Probably not a good idea to hold my breath though…