Twitter is not always the best medium for exchanging ideas. I use it, but only as notification platform because I see on it people who I once admired behave in a way that erases nearly all respect. Intelligent individuals make comments they would regret if they had been texts to friends, let alone messages to the whole world. People who once seemed judicious in their judgements behave – at best – like scolds, desperately attempting to correct the world for not holding precisely the same views as themselves.