'Tis the time of the year for interviewing graduate school candidates. The exact purposes vary from a significant selection process to "just make sure s/he isn't completely bonkers, okay?".
Michael Eisen asked on the Twitts:
what do people think are the most useful things to ask in a 30m grad school interview?
After a wisecrack or two I came up with a serious one.
"tell me about the moment you first realized you weren't the smartest person in the room?"
What would you suggest, Dear Reader?