They (kind of) have a point though. I agree you should aim to be polyglot, but a particular project may not afford the learning curve if the dev doesn't already

They (kind of) have a point though. I agree you should aim to be polyglot, but a particular project may not afford the learning curve if the dev doesn't already know the best stack. For example, I'm working (part time) on a relatively simple backend server for a nonprofit with a tiny budget and short deadlines. I know I can do it cheap and fast in Python, and it will work "ok". Go would be better, and I'd like to learn it, but I'm uncertain I could pull it off in time. EDIT: Then again, it looks like I could realistically learn enough Go for this project in a weekend. Only problem is there could be data analysis, I know good libs in Python, don't know how hard that would be in Go.