So it’s a very simple intuition– that if you have all of these used cars, and you can’t tell a good used car from a bad used car as a buyer– because the seller knows the quality of the car– and a good used car is say maybe going for $4,000. TIM SULLIVAN: So a lot of these ideas– I guess the big shift I would talk about as you progress– because the book is set up by time– is starting to figure out things that there were these revolutions in the 60s and 70s that have these long-term impacts. TIM SULLIVAN: But then auction theory becomes this whole field of economics that used to do things like auction off spectrum for cell phones starting in the 90s.