When vim auto opened the bloke next to me doing my induction told me I needed to type ":wq" and then made a joke about how unintuitive it is.
> FWIW I still maintain the belief that it is usually a decent indicator of whether you have got the experience to work through unfamiliar tools
if you just said that in the first place I'd agree, but that's different. Good engineers are brave and able to just dive into some unknown to get the job done. I'm sure there's been plenty of times where we've been thrust into scenarios where we have to use unfamiliar tech to solve an issue or throw up some infra. However, personally I've never _had_ to use vi, so its not come up, but that's probably because my background is very much a windows one, not a linux/unix one.