That's not really true, change is incredibly _easy_ without static types. I've worked an a few large projects now all in Python or JS where the test time has ne

That's not really true, change is incredibly _easy_ without static types. I've worked an a few large projects now all in Python or JS where the test time has never really been an issue, nor has the ability to make changes. I'd say it's not really the language, but rather the abuse of it. The same goes for any project in any programming language.