I am new and trying to understand how Lemmy works. I am posting this from my lemmy.world account, on a lemmy.ml community. It seems like you can read, post, subscribe to whatever community outside of the instance you’re registered with. So… Why register on lemmy.world vs lemmy.ml or any other instance, if all communities are accessible to everyone?
Correct me if I’m wrong, but it’s as if instances are countries and communities are cities. A state gets connected to a city of another state when someone decides to drive there (search it). When someone does that, it creates a street that both states can take (and so posts and comments from that community automatically get to the other instance).
Am I getting this right?