> Unit testing, leading to dependency injection, leading to IoC containers, leading to lots of tools to assemble, intercept and rewrite code at execution time.

> Unit testing, leading to dependency injection, leading to IoC containers, leading to lots of tools to assemble, intercept and rewrite code at execution time. The argument for static typing is often so that refactoring is easier and ide's work better. I always thought it was funny that the core reason for needing fancy ide's and large rename and refactor capabilities was that static typing and over abstraction in the first place.