Here's the link: http://freakonomics.com/2014/04/04/bring-your-think-like-a-freak-questions-for-levitt-and-dubner/ http://freakonomics.com/2014/04/04/bring-your

Here's the link: http://freakonomics.com/2014/04/04/bring-your-think-like-a-freak-questions-for-levitt-and-dubner/ http://freakonomics.com/2014/04/04/bring-your-think-like-a-f.... They also mentioned it recently in their podcast.