Repugnance radio

Freakonomics Radio on NPR's Marketplace had a short segment called It's repugnant, but hey, it's efficient!, in which they speak about organ sales, among other things.

In it, Steve Levitt says
"One of the easiest ways to differentiate an economist from almost anyone else in society is to test them with repugnant ideas. Because economists, either by birth or by training, have their mind open, or skewed in just such a way that instead of thinking about whether something is right or wrong, they think about it in terms of whether it's efficient, whether it makes sense. And many of the things that are most repugnant are the things which are indeed quite efficient, but for other reasons -- subtle reasons, sometimes, reasons that are hard for people to understand -- are completely and utterly unacceptable."

In the comments, they get the following crack:
"There is one organ that nobody will ever need: The brain of an economist."