> I wanted to understand the context of some of the things I needed to do, and also poke into each enough to understand how much depth there is and what I don't

> I wanted to understand the context of some of the things I needed to do, and also poke into each enough to understand how much depth there is and what I don't know To me this is not equivalent to "very familiar". I think whakim's comment puts things well: > I use AWS day-to-day, but haven't used GCP day-to-day in 5+ years - should I realistically be able to keep abreast of the vast number of GCP changes that have happened over that time (plus all the changes in devops that make the workflows I was using 10 years ago look outdated)? Many projects don't need Websockets or Eventsource - do I have to keep that knowledge top-of-mind across the years that I don't use them? Can you really claim that you're "very familiar" with that web framework that you used two jobs ago - assuming there haven't been a bunch of major changes since then? https://news.ycombinator.com/item?id=30474206 https://news.ycombinator.com/item?id=30474206