“If someone were to tell a friend, ‘I want to see you tonight’, you would wonder what was meant by ‘you’. You would keep asking yourself, ‘Does “you” in this case mean “you” or “U”?’
If ‘you’ means ‘U’ and ‘U’ is me, then that lady wants to see me tonight. And then you would wonder why, I tell you, Professor Sherman, ‘U’ is a bad name.”