isn't credible. they're reading websites, they're listening to talk radio, they're looking at twitter. and if somebody who is in a position of authority gives it impra matter, it takes off. >> i believe it was thor who said, odin! >> but sometimes this stuff just falls on vulnerable ears. you can't police every conspiracy theory -- >> some psycho who's out there, someone who has a mental health issue -- >> you're not going to spend your time debunking every conspiracy theory on this program every night. the truth is, there are vulnerable people who are going to hear these things and they're going to act this way. this is part of our society, unfortunately. >> i googled it and matt's right about spider-man. i wanted to check that one. to get serious, people in power benefit from confusion. we've seen it all around the world in authoritarian regimes. i think we have to wonder if when donald trump on the campaign trail would bring up conspiracy theories, if he, in power as president, will benefit from this kind of fake news confusion. and then you have to wonder,