(Radi Khrapko) wrote in message . com...
An answer to the Fermi's question, `Where are they?', is
presented. The answer is: we are alone because our Universe
is bad for a civilization. The combination of physical constants
does not need to be more fine tuned than is necessary to permit
one civilization and, since extreme fine tuning of the constants
is a very unlikely event, it is most likely that our Universe is
just good enough to permit development of only one
civilization. The alternative anthropic principle can be
formulated as follows: `It is most likely to observe a universe
in which civilized life is an extremely rare phenomenon.'

Astronomical and Astrophysical Transactions 22 (2003) 847-850

Radi Khrapko

It does not sound as a "new Anthropic Principle", it sounds as a
particular version of it. It is perfectly possible that probability
threshold is too low to meet another instance of life (as we perceive
it). However our perception of life is very limited by our
understanding of reality itself. Multiverse construct gives us way to
see enormously more complex picture of nature.

George