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Half the Facts You Know Are Probably Wrong: Old truths decay and new ones are born at an astonishing rate...

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Dinosaurs were cold-blooded. Increased K-12 spending and lower pupil/teacher ratios boost public school student outcomes. Most of the DNA in the human genome is junk. Saccharin causes cancer and a high fiber diet prevents it. Stars cannot be bigger than 150 solar masses.

In the past half-century, all of the foregoing facts have turned out to be wrong. In the modern world facts change all of the time, according to Samuel Arbesman, author of the new bookThe Half-Life of Facts: Why Everything We Know Has an Expiration Date (Current). 

Fact-making is speeding up, writes Arbesman, a senior scholar at the Kaufmann Foundation and an expert in scientometrics, the science of measuring and analyzing science. As facts are made and remade with increasing speed, Arbesman is worried that most of us don’t keep up to date. That means we’re basing decisions on facts dimly remembered from school and university classes—facts that often turn out to be wrong.

 Read more via Reason...

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