Von Neumann’s favorite story. In Berlin, during World War I, a man stands with a placard: “The Kaiser is an idiot.” When the police arrest him, he says, “I’m referring to the Austrian Kaiser.” And the police response is: “You can’t fool us. We know who the idiot is.”

摸着石头过河。(Cross a river by feeling the stones) - Deng Xiaoping

When going gets tough, the tough make a powerpoint presentation!