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What Is the Difference Between Bias and Noise in Judgment?
David Frum's new book, "Noise," is about the difference between bias and noise. He says a bathroom scale can be biased or noisy depending on how many times you step on it. There are huge differences in judges' judgements as well, he says. Dr. Frum: In Israel I saw survivors of camps with numbers that toed on their arm living normal lives.