What we think we know

Ok, I really love these TED talks. What is TED? According to their website

TED started out (in 1984) as a conference bringing together people from three worlds: Technology, Entertainment, Design. Since then its scope has become ever broader. Along with the annual TED Conference in Long Beach, California, and the TEDGlobal conference in Oxford UK, TED includes the award-winning TEDTalks video site, the Open Translation Program, the new TEDx community program, this year's TEDIndia Conference and the annual TED Prize.

The talks on their website (and on youtube) are short 10-15 minute things and are usually something that will make you think but not something boring. Here is one I just listened to What we think we know where he asks 4 questions that most people think they know the answer to, but might completely be wrong.