Big plus if it can "mind-map" your data and any other data that is public through the service, at the "tag" level or maybe with some deeper understanding of it.

Like, if you start writing an essay on black holes, or doing a kubernetes deployment, it can "suggest" you what other people have done and/or show you how people solve specific issues.

Maybe the idea is to broad and I definitely need to organize my thoughts on this. but yeah, sometimes you don't have to start from scratch nor have the information "fully ready" for you to start leveraging it.