             Comments     Threshold   RE: Disagree By Ard on
4/26/2010 10:50:17 AM , Rating: 2 I would say the numbers are
against you. Even if we surmise that the chances of life forming
are one in a billion, that still leaves a billion times life
will form/evolve (and that's taking the low estimate, as the
high end estimates that there are a trillion, billion planets in
the universe based on what we've observed so far).  As to the
ability of sentient life to reach us, I would simply look to the
anthropic principle (taken out of context for this example but
useful nonetheless). If aliens were able to reach us, it is
undoubtedly the case that they would have the technological
means to do so. It also goes without saying that they would be
far more intelligent than our species. And, when you get right
down to it, if an alien species developed closer in time to the
formation of the universe (there's about a 9 billion year gap
between the age of earth and the age of the universe), it makes
sense that they would b