The function coloring post[1] covered this very nicely some time ago. It's definitely still an issue in any "monadic" approach to IO. People who use progressiv

The function coloring post[1] covered this very nicely some time ago. It's definitely still an issue in any "monadic" approach to IO. People who use progressive languages[2] will be using effect systems in a year or two, and this problem will go away. [1]: https://journal.stuffwithstuff.com/2015/02/01/what-color-is-your-function/ https://journal.stuffwithstuff.com/2015/02/01/what-color-is-... [2]: Unison, OCaml, Scala, and maybe more I don't know about.