Deming's Law

Deming's Law: The accuracy of an extrapolation varies inversely as the square of the author's conservative adherence to probability.

Corollary: It is impossible for a science fiction writer to extrapolate fast and far enough to keep up with factual progress.

-- from the Magazine of Fantasy and Science Fiction, editorial introduction (Anthony Boucher?), December 1955 (vol 9, No. 6), page 36

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