Nothing more painful than watching an FP hipster explain monoids as of they're deep and mysterious. Simple ideas should be explained simply!
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@bitemyapp@dustingetz@steshaw I was combining@dibblego and@StephenPiment's answers, who forgot associativity and closure respectively.
@numberdotten @bitemyapp @dustingetz @steshaw @StephenPiment Associativity is given by being nice, which all people are :)
