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Thanks for the feedback, I totally agree that monads are not containers. From an OOP perspective, they have some properties that make them, in some sense, sorta like containers, e.g., they contain a value like the Maybe monad. I still agree that they are not simply containers. I can clarify this in a revision to part 1 soon.

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> From an OOP perspective, they have some properties that make them, in some sense, sorta like containers, e.g., they contain a value like the Maybe monad.

Not always! I find this is a big source of confusion; not all monads contain values, sometimes beginners think they can or should "get the value out" of a monad and that tends to lead to writing the wrong kind of code.

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