"Robert J. Kolker" skrev i melding
...


Uncle Al wrote:


Life is finely tuned to exist in the universe. There is no anthropic
principle. Sentience exists because the universe cannot be bothered
with doing the fine stuff..

The Weak Anthropic principle has validity. It the universe were not a
certain way physically then we would not have evolved. The nature of the
universe must be such that life like ours can evolve in conditions that
existed and exist on Earth. If the universe did not have stars that
exploded and produced the elements of which we are composed we would not
be here.

Doesn't that presume that "life" is bound exclusively to our configuration
of the physical substrate (carbon- and DNA-based)?

"It the universe were not a certain way physically then we would not have
evolved ..." - the way we have evolved, but perhaps another way? This
wouldn't actually disprove the weak anthropic principle, but make it
considerably weaker, I think; Granted, we are here, so it is trivially true
that the conditions for our existence must obtain, but nowhere does it say
that it had to be these conditions, or this kind of life: and so, not us.

T