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Haha yeah I kinda went off the deep end with applicatives. Here's a short primer on applicative vs monadic shrinking behavior using F# syntax https://github.com/hedgehogqa/fsharp-hedgehog/issues/419#iss...

You can think of `let!` as `let + await`, and `let! x ... and! y` as `await Parallel([x, y])`.

Please feel free to ask any questions if it's still confusing!

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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.

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