Oh, I may have stated things poorly — no, I am not talking about the rate of mutations, per individual or per unit of time. Yes, those can increase under stress. However, each of those mutations is like a lottery ticket — it has a certain probability of ‘winning’, being a trait that increases fitness. For the sake of example, suppose the chance of winning was one in a million billion — in terms of combinatorics of amino acids forming useful proteins, that’s extraordinarily generous. Then, with a little bit of logarithm rearrangement, we see that we have a 50/50 chance of a winning ticket after about 700 thousand billion* tickets*. That’ll be true regardless of the temporal or individual rate of mutation. Is the difference with what you pointed out clear, there?

Then, if we observe organisms which *uncover winning tickets* at a frequency *among tickets* of **only** one trillion tries, we would have to **find** an explanation for how organisms were uncovering winning mutations *after so few attempts*. That is where quantum operations, to search that space of mutations in parallel, might be handy. I hope that made sense!