Bravo, Freakonomics Radio!
If you're a journalist, you need to listen to the many theories on why interviewees respond to you with, "that's a great question".
It may be distracting you from what you need to achieve, and that may be exactly why it was said!
So when was the last time it happened to me?
Well, that's a great... oh, just follow the damn link to their show!