New abstractions are generally better introduced to new audiences via concrete examples that can later be generalized rather than formal abstractions that float

New abstractions are generally better introduced to new audiences via concrete examples that can later be generalized rather than formal abstractions that float high above our heads. The GP's explanation of the concrete features (with simple examples!) is one of the most useful explanations of monads I've seen. It isn't complete, but as a gateway to a complete explanation it is extremely good.