One day when he was young, My Friend Herb returned from school and announced he got an ,F in arithmetic.”Why?” asked his father.”The teacher asked ‘How much is 2×3?’ and I said ‘6’” “But that’s right!” Herb’s father complained.”Then she asked me ‘How much is 3×2?'” “What’s the *&)*(&% difference?” asked Herb’s father.”That’s what I asked!” Herb said.