Probably the upside down t-shaped graph of expertise, where you know a lot about one topic and a little about everything else. I believe this happens sort of na

Probably the upside down t-shaped graph of expertise, where you know a lot about one topic and a little about everything else. I believe this happens sort of naturally if you just work where you're needed because you'll get pigeonholed as the person who can do X whenever it needs to be done, then you can branch out when X is finished. I'm not sure because I'm still pretty junior myself. You get a similar effect from repeatedly reading hn, because you'll read articles on topics you know about and then branch out when you're bored of it.