If the engineers didn’t know something, they’d say something like, “Oh, Lifer knows about that; let’s get him in.” Al would call up Lifer, who would come right away. I couldn’t have had a better briefing.
It’s called a briefing, but it wasn’t brief: it was very intense, very fast, and very complete. It’s the only way I know to get technical information quickly: you don’t just sit there while they go through what they think would be interesting; instead, you ask a lot of questions, you get quick answers, and soon you begin to understand the circumstances and learn just what to ask to get the next piece of information you need.
Richard Feynman, What Do You Care What Other People Think?: Further Adventures of a Curious Character, New York, 1988, pp. 82-84