Perhaps you should read Paul Davies, "the Goldilocks Enigma", written subsequent to Schroeder that supports the same postion.
Perhaps you should understand the things you post about. Davies does not in any way support a "supernatural" answer for anything.
From Davies himself.
quote:Thus, three centuries after Newton, symmetry is restored: the laws explain the universe even as the universe explains the laws. If there is an ultimate meaning to existence, as I believe is the case, the answer is to be found within nature, not beyond it. The universe might indeed be a fix, but if so, it has fixed itself.