There are many solid, trustworthy inferences in modern science, but there are those that are not very trustworthy at all.
It’s circular: “Because evolution innovates things, it will innovate things if given the opportunity.”
The basic thesis of TPP is that the best places for intelligent observers are also the best places for observing.
Contrary to popular and media myths, Darwin’s view of evolution faced from its beginning opposition and criticism from scientists that have never gone away.
Dawes and Smith say they’re simply describing (as a “matter of fact”) the history of science.