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Re:A Gentle Intro to Monads … Maybe? by danidiaz on Friday January 17, 2014 @11:38AM (#7076661)
In Haskell, only the IO monad (and perhaps ST as well) is tied to the language's "core". All other monads are conventional Haskell code.

It's better to think of them as a sort of design pattern.

Re:A Gentle Intro to Monads … Maybe? by Mithaldu on Friday January 17, 2014 @11:54AM (#7076778)
Since you said the same thing as someone else, please see: https://news.ycombinator.com/item?id=7076738