"...if you can't say anything nice, then don't say anything at all..." - Thumper's Law. On my way home from the office one day, I encountered a man with whom I shared the back seat of a taxi. He made a statement about an older colleague of his. Hear him: "I don't know what a man of fifty is doing still working. He should have retired because he can't contribute anything meaningful to his organisation again". At first I thought he was thinking aloud,...