1) Who says that this is meant for production code? It is first and foremost a demonstration of the power and flexibility of the Scala type system. 2) I wouldn

1) Who says that this is meant for production code? It is first and foremost a demonstration of the power and flexibility of the Scala type system. 2) I wouldn't mind actually using it in production if the library was written as a litterate program including the whole blog post. Once you wrap your head around the concept, the code becomes clear (and is so simple that you can understand it doesn't have any bug to be fixed anyway)