I don’t agree at all. I was productive within a month in a completely new language and stack at my current job for example. Once you know a few inside out, it’s

I don’t agree at all. I was productive within a month in a completely new language and stack at my current job for example. Once you know a few inside out, it’s just pattern matching with some Googling of “what’s X in Y language”. Extremely deep knowledge of a language is very rarely needed, even when it is as long as you can somewhat vocalize the problem it’s just debugging