Don Shula, one time coach of the Miami Dolphins, was talking to a reporter about a player's mistake in practice. He said, "We never let an error go unchallenged. Uncorrected errors multiply." Then the reporter said, "Isn't there benefit in overlooking one small flaw?" Shula said, "What is a small flaw?" I think about that all day long. What is a small flaw? I see that with my children. I've let a ...