Not quite accurate with the Parallel example, if I understand you correctly. Don Syme is explicit that applicative `async` should not implicitly start work in the thread pool (https://github.com/dotnet/fsharp/issues/10301#issuecomment-7...).

My usage of "parallel/await" is entirely metaphorical; I was kinda going for a Javascript-esque syntax with "await Parallel" - I'm assuming most people aren't familiar with F#'s `and!`. It doesn't make sense for applicative generators to (necessarily) use the thread pool.