This is referencing Philip Wadler’s 1989 paper “Theorems for Free”, which is fairly well known in the Haskell community: https://home.ttic.edu/~dreyer/course/papers/wadler.pdf

Wow this really feels like reddit again. High quality comment followed by low effort award post. All we need now is an award speech edit

This joke is out of this world

Portable pots are great axles for bikes and tricycles