# Bayes' theorem

From Lesswrongwiki

A law of probability generally regarded in the Overcoming Bias/Less Wrong community as the foundation of consistent rational reasoning under uncertainty.

**Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle P(A|B) = \frac{P(B | A)\, P(A)}{P(B)}.}**

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