My disappointment with Ted Koppel

I was listening to NPR's Talk of the Nation while driving home tonight: the topic was the federal deficit. They brought in Ted Koppel to talk about it, and he was asked the difference between the national debt and the deficit--and he couldn't answer.

It did not so much disappointment me that he didn't know (although the distinction is pretty easy--the debt is a stock and the deficit is a flow). It disappointed me that given that he knew he didn't know, he still thought he had something worthwhile to say about the issue.