It is not impossible to create a large program in a dynamic language. It simply requires extreme discipline. At the same time, it is not impossible to write a

It is not impossible to create a large program in a dynamic language. It simply requires extreme discipline. At the same time, it is not impossible to write a large program entirely in assembly language, it just requires extreme discipline, even more so than python. It's just a question of degree. But when you DO get a type problem, and in any sizable code base, you WILL, it only manifests AT RUNTIME, and possibly at a customer site or in production, rather than manifesting at compile time.