Google ads on the radio

This is pretty amazing, if you ask me. Because of all the practical barriers (poor information, inaccessible markets, etc), most industries operate a long way from how economic theory would like to think they do. This is part of the reason that I frequently see people with a "the market can solve any problem" attitude as being silly and obnoxious. However, Google and technology in general are rapidly bringly lots of things closer to theory...