Paul Graham glosses over the details: writing LISP in continuation passing style is not for the faint hearted. For a modern implementation that hides the gnarly stuff, see https://docs.racket-lang.org/web-server/stateless.html The disadvantage of this kind of stateless server is that you need to keep around a hash full of continuations, basically one for every page visit. Each of these continuations contains an entir…
Using delimited continuations in a web framework is magic. In remember the first time I saw things like pharo and wodered how it was even possible. Doing that stuff in Python is still hard. Doing it in racket is easy peasy.