We must stay where we are. You would not think it, to look at them. There is no a priori probability about it. He remarks that, while the individual man is an insoluble puzzle, in the aggregate he becomes a mathematical certainty. You can, for example, never foretell what any one man will do, but you can say with precision what an average number will be up to.
Individuals vary, but percentages remain constant.
So says the statistician. Surely there is a white flutter over yonder. Full speed ahead, engineer. Make after that launch with the yellow light. She had slipped unseen through the yard-entrance and passed between two or three small craft, so that she had fairly got her speed up before we saw her.