[js1138]

The only thing that experiment proved was that bacteria could be forced to adapt to the heat stress.

That's the nature of controlled experiments. Cite a classic experiment in chemistry or physics that demonstrates more than the principle under investigation.

[NicknamedBob]

"That's the nature of controlled experiments. "

That was my point.

I got the impression that had thought they were able to point to a specific instance where mutation was induced. I didn't read closely the entire experiment, but I didn't come away convinced they had disclosed that.