Bayes was a past master at code breaking.. probably
He introduced two ideas – uncertainty can be represented by probabilities and evidence can be used to update probabilities about events.
Gambling, code breaking, and the detection of spam e-mails have two things in common. The first is that they all involve thinking about uncertainty. The second is that the uncertainty can be described by the mathematical theory introduced by Bayes.
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Hide AdBayes studied logic and theology at the University of Edinburgh in preparation for a career in the ministry. Although he was a Presbyterian minister in Tunbridge Wells for 18 years, he maintained a lifelong interest in mathematics. His mathematical accomplishments were sufficient for him to be elected to the Royal Society.