> his claim is that--even with unit tests--refactoring is not safe in Python et al;
Well that claim is False. I and thousands of other Python developers disprove it daily. Just because they can't refactor dynamic languages doesn't me we can't. Something not-dynamic is probably the language for them. And Python is the language for us.
In other words there is far more variability between developers than there is between languages. Find the language(s) that work for you and quit believing they are the languages for everyone.
Well that claim is False. I and thousands of other Python developers disprove it daily. Just because they can't refactor dynamic languages doesn't me we can't. Something not-dynamic is probably the language for them. And Python is the language for us.
In other words there is far more variability between developers than there is between languages. Find the language(s) that work for you and quit believing they are the languages for everyone.