We know that monads come from adjunctions (and this was discussed on SO too). The usual monads in programming use come from well-known adjunctions. So where does the Tardis monad come from? (RevState
would be nice to know about too).
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Jacques Carette
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I strongly suspect `RevState` will be an adjunction between **Hask** and **Hask**Op. – leftaroundabout Mar 28 '19 at 12:56