Ah, in the lab you treat them like careful mathematics: absolute is the raw error, fractional divides it by the measurement, percentage multiplies that by one hundred. But in my gym, we only know absolute uncertainty—the weight either goes up or it does not. I see a boy struggle for weeks with the same forty kilos, his uncertainty absolute, until one Sunday he lifts it clean. That small, certain victory is worth all the percentages in the world.
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