it started with an offhand comment that godcast didn't understand how the lung could co-evolve with the diaphragm

but he was looking in the wrong place: diaphragm-like functionality pre-existed lungs (ie: we have bladders with something like a diaphragm, and early lungs seem to have developed from air bladders, which were useful for bony fish to stay balanced and to have greater depth control).

then the question of whether chromosome changes could occur, since when we observe chromosome changes it's always bad (like down syndrome). But there's an obvious, glaring exception to that : the fusion of pre-human-chimpanzee-split chromosomes. (And of course we see it all the time with drosophilia).

Then the question of the evolution of proteins from simpler forms of matter came up, with godcast clearly not knowing about the discovery of extraterrestrial protein in 2020. They just write that off as a one-of mistake by researchers who found it, since it hasn't been replicated yet.

Then after they noticed that their examples of "what about this?" are falling one after another the question came to be a matter of whether or not evolution had been proved in the general case, in the presence of natural selection (which chaitin did). And of course their fallback is just to accuse me of 'having faith' instead of being convinced by the evidence at hand