Why Functional Programming Matters

In this episode, I read excerpts from Why Functional Programming Matters by John Hughes. Does it answer the question of what is functional programming and why is it powerful?

[zynot]

Very interesting. Canrad Barski goes through a lazy gametree example in his book "Land of Lisp". I remember working though it in common lisp and having to spend days retraining my brain in a different way of thinking.