[pizza]

People can debate till the cows come home. But it's worth remembering that hacker news is about stimulating intellectual curiosity.

There's no reason for this to have a fixed flow, either - it's got a hint of diagonalizability to it - by which I mean, you can get the model to build a schema for dynamic flows, given a 'bootstrapping' schema. No different than what has always had to happen for someone to write a compiler for a programming language in the language itself.