To add some specifics to this pile-on: - The classical example of a randomized experiment is a perception/psychophysics experiment: the Lady Tasting Tea. This

To add some specifics to this pile-on: - The classical example of a randomized experiment is a perception/psychophysics experiment: the Lady Tasting Tea. This introduced the idea of a null hypothesis as well as Fisher's exact test. https://en.wikipedia.org/wiki/Lady_tasting_tea https://en.wikipedia.org/wiki/Lady_tasting_tea - Visual and auditory experiments more or less invented signal detection theory and used it to probe visual and auditory processing. Those ROC curves everyone loves predate "machine learning" by decades. - A lot of the fancy hierarchical and Bayesian modeling work have come from psychologists and social scientists (e.g., Andrew Gelman)