After reading up on lisp and associated topics (purity mainly) I rewrote a component in our C# code base and made it magnitudes of order more stable and atomic.

After reading up on lisp and associated topics (purity mainly) I rewrote a component in our C# code base and made it magnitudes of order more stable and atomic. I hadn't written a line of lisp (although counted many brackets when trying to read along) but just studying it helped me think about programming problems a bit differently.