Hi Folks, I completed the second half of my summary of John Hughes' outstanding paper titled, Why Functional Programming Matters. This second half describes the importance of lazy evaluation and function composition. I converted all of Hughes' examples into Haskell. It contains a lengthy example showing how to implement the game of tic-tac-toe, and how lazy evaluation enables the implementation of tic-tac-toe to have a level of modularity that would otherwise not be attainable. (Modularity is important. Hughes writes, "Modularity is the key to successful programming") Here is my summary: http://www.xfront.com/Haskell/Why-Functional-Programming-Matters-Part-2.pdf /Roger