Humans hardly ever learn from the experience of others. They learn - when they do, which isn't often - on their own, the hard way.
Robert A. HeinleinHe had learned that close-held secrets could often be cracked by going all the way to the top and there making himself unbearably unpleasant. He knew that such twisting of the tiger's tail was dangerous, for he understood the psychopathology of great power.
Robert A. Heinlein