› added 8 years ago

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TIL: President James A. Garfield’s killer Charles J. Guiteau bought a revolver with an Ivory grip over a cheaper wooden grip because he thought it would look better as a museum piece after the Assassination.

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WyPA TIL Nikolas Tesla rejected Einstein’s Theory of Relativity on claims of discoveries that he worked out a dynamic theory of gravity which he never published.
YpDKv TIL For a 40 yo woman, the chance that annual mammograms give a false alarm is roughly 50/50 and the chance that the false alarm leads to unnecessary mastectomy is greater than the chance that a curable cancer is treated and prevents death. (1.1 vs. 0.16%).