#2545: Bayes' Theorem
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[Miss Lenhart is pointing with a pointer, held in her right hand, to a white-board with tables, what looks like formulae and lots of other unreadable text. She looks toward her off-panel class, from where a voice replies to her question.]
Miss Lenhart: Given these prevalences, is it likely that the test result is a false positive?
Off-panel voice: Well, this chapter is on Bayes' Theorem, so yes.
[Caption below the panel]:
Sometimes, if you understand Bayes' Theorem well enough, you don't need it.
(Sourced from explainxkcd.com)
Title text:P((B|A)|(A|B)) represents the probability that you'll mix up the order of the terms when using Bayesian notation.