"<a href=""https://www.youtube.com/watch?v=Gfr50f6ZBvo&amp;t=1h29m00s"">1:29:00</a> Finally", finally, finally, I feel vindicated. WE ARE ALONE. To answer your question, Lex, the most special part is going from nonlife to life. Obviously it is possible because we exist but to put a number on how ridiculously difficult that is, is impossible, rendering the Drake equation rubbish.