You need to learn Haskell in a non trivial way. Code in it. And then you need to completely internalize why the IO monad exists and why it encourages the progra

You need to learn Haskell in a non trivial way. Code in it. And then you need to completely internalize why the IO monad exists and why it encourages the programmer to code in ways that stay away from using it. I had a friend (who’s in general a good programmer) learn Haskell and then get completely annoyed by the IO monad so that he quit learning Haskell. So yeah, it’s not easy to “get it” You only get it with reading and practice. Really you just need to completely internalize and grasp the purpose of the IO monad in Haskell.