Comment Re:One step forward, two steps back (Score 4, Insightful) 62
Actually, given that there's 100-400 billion stars in the galaxy, and 0.001^4 works out to one in a trillion, that gives you about a 10 to 40% chance of there being one intelligent species in the milky way. /semantic
But I agree, in general. The odds of earth being the only planet with life at all in the whole galaxy...are pretty astronomical, in my opinion.