I do this relatively often. I see the State monad as a convenient way to see the type (s -> (a,s)) that happens to have a monad instance. When the best way to make use of it is to go in and out of monad "mode", I do that. Quoting David Banas on Fri, 13 Mar 2020 15:56:55 -0700:

Can I call a State Monad recursively from within a let-block, via `runState`, or is that going way out of bounds? -db

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