It's interesting that naively you can't prevent "context collapse" and "filter bubble" at simultaneously: you must allow for people to be exposed to and engage

It's interesting that naively you can't prevent "context collapse" and "filter bubble" at simultaneously: you must allow for people to be exposed to and engage in topics they don't really know anything about or contribute constructively in, or wall them off only into the communities that they participate in. There are probably nuanced and ingenious solutions to this, but nothing straightforward.