Maybe it’s like this: Given that I have no experience with Go, I’d still rate myself at least 3 when someone asks me how well I’d be able to work with it because the job they’re asking it for is ‘back-end development’.

Of course this falls apart the moment they ask me any Go question during the interview, but not when I’m actually asked to build a web application in it after being hired.

(the one time this happened people thought I’d been working with the new language for years, but no, it’s just a whole lot of transferrable skills)