I think this begs the question, how quickly would there have to be evidence of biological changes spreading throughout populations of people for most evolutionists to finally concede that these things are happening too fast for random mutations and natural selection to be the cause? 1000 years? 500 years? 20 years?
At what point do you finally say, now wait a second, I can't see 30 genes getting exactly the right mutations which could be useful for increasing altitude adaptation surviving through natural selection choices, and out-competing all other genetic varieties in such a short time? Is there any number that all honest people must say-ok, something else is definitely going on here?