# The Fundamental Theorem of Epistemology

Originally published: 2016-08-20
Canonical URL: /2016/Aug/the-fundamental-theorem-of-epistemology/

$$P(H|E) = \frac{P(E|H)P(H)}{P(E)}$$

(more commonly known as [Bayes's theorem](https://arbital.com/p/bayes_rule/), but I like my name better)