It was one of those episodes that made it click for me. I can't remember which episode it was but Jerry and the other guy were discussing what it was like on stage and Jerry mentioned during the periods the audience is laughing he isn't thinking about the laughter or the crowd. Instead he's thinking about how he's going to continue the joke or transition to another one. I have found the whole series to be really insightful into the lives of comedians. I think it was one of the earlier episodes in the latest season.