The Fermi Paradox
A fascinating question: Where is everybody? http://imgur.com/gallery/Wtog9
A really starry sky seems vast—but all we’re looking at is our very local neighborhood. On the very best nights, we can see up to about 2,500 stars (roughly one hundred-millionth of the stars in our galaxy), and almost all of them are less than 1,000 light years away from us (or 1% of the diameter of the Milky Way). So what we’re really looking at is this:
I also subscribe to the obvious point that all these advanced civilizations are avoiding us mostly because theyve been getting 70 years of "I Love Lucy" and "Benny Hill"