Bernard Goldstein tells this story:
One of my pet peeves as a musician in a symphony orchestra is trying to follow the unpredictable beat of famous guest conductors. I didn’t realize how strongly the rest of the musicians felt until we were talking to someone from a university physics department at a reception. When I asked him what his field was, he answered, "I work with semiconductors." "So do we," I heard a colleague mutter. (Reader’s Digest)