Abstraction takes on a different meaning amongst functional programmers. This episode we dig into how parametric polymorphism is an essential tool in developing well behaved abstractions that transcend simply being a solution to your individual problem.

John Degoes polymorphism post

http://degoes.net/articles/insufficiently-polymorphic

When x, y, and z are great variable names

http://blog.ploeh.dk/2015/08/17/when-x-y-and-z-are-great-variable-names/