Microblog

If you ever have to prove someone wrong, prove it by action, not by words. Two advantages to that. 1. You'll get the conf. yourself that you were right. 2. They'll not face the embarrassment and the resulting cognitive dissonance bcz they'll think they learned it by themselves. The only disadvantage is you will not get to have your ego boosted. But if that was your aim, you were not arguing for the right reasons.