macro: take a cobb-douglas function, K fixed = short run and variable K = long run. Add IS-LM and one’s favourite politics.

stats: there is no intuition to the classical tests, they’re just answers to gedankenexperimenten. Check out letter value plots, interquartile range, and the bayesian model Pr(θ | data)

oop: Instead of saying what to do explicitly, you make up some characters and play God.