I'm surprised at how little new information I found in this talk. Which is not to suggest I'm very knowledgeable, only that a few of my favorite wikipedia artic

I'm surprised at how little new information I found in this talk. Which is not to suggest I'm very knowledgeable, only that a few of my favorite wikipedia articles must do a damn good job of summarizing these topics, particularly http://en.wikipedia.org/wiki/Fermi_paradox http://en.wikipedia.org/wiki/Fermi_paradox