# Fisher and Neyman

So what’s the deal with the conflict between Neyman and Fisher?

It appears to be this: 1. Neyman wanted to be explicit with alternative hypotheses. 2. Neyman used the explicit alternative hypothesis to generate and prove the optimality of tests. 3. Neyman wanted to calculate power and saw it as an important part of the whole hypothesis testing set up. 4. Fisher used p-values while Neyman used fixed $\alpha$s. 5. Fisher talked about inductive evidence while Neyman talked about inductive behavior.