This is really naive about how much of effective programming is about knowing the frameworks, libraries, corner cases, idiom, etc of each language. Sure, you c

This is really naive about how much of effective programming is about knowing the frameworks, libraries, corner cases, idiom, etc of each language. Sure, you can write-in-C in all languages, as the saying goes. But to be a professional, and to paid as a professional, requires a lot more.