Penrose (2004: 758):
It should be evident to the reader that arguments from the anthropic principle are fraught with uncertainties, although they are not without genuine significance. We do not have much idea, for example, what conditions are actually necessary for the production of sentient life. Nevertheless, the situation is not so bad when used with examples, such as given above, where we are taking the laws of physics and the overall spacetime structure of the universe as given, and we ask merely questions like where or when in the universe are conditions likely to be so-and-so, in order to be conducive to sentient life. This version of the anthropic principle is referred to, by Carter, as the weak anthropic principle.
Blogger Comments:
To be clear, this principle is so weak as to be neither anthropic nor a principle. It is merely an anthropocentric view of the search for extra-terrestrial intelligence.
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