Bayes' theorem has become fundamental for statistics. It was revived in the 20th century by mathematician Sir Harold Jeffreys FRS & physicist Bertha Swirles. They described it as occupying the same place for the theory of probability as what the Pythagorean theorem means to geometry.
You can hear in this video neuropsychologist Richard Gregory FRS (1926-2010) explain the theorem and its impact.
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