Most data science talks tell you how to do 2 group comparisons, i.e. "A/B" tests, with the t-test.

## I have Three Messages

**Message 1:**You don't have to be stuck with two groups and normal distribution assumptions.**Message 2:**PyMC3 is a great language for probabilistic modelling.**Message 3:**With Bayesian modelling, we can move away from canned statistical procedures, and do statistics in a principled fashion.