Imagine a world where the only content you see is from publishers that you trust, and that your friends trust, and their friends, to maybe 4 or 5 hops or so, and the feed was weighted by how much they are trusted by your particular social graph. If you start seeing spammy content, you downvote it, and your trust level from that part of your social graph drops, and they are less likely to be able to publish things tha…
In theory there was a time in the past where there was such a thing as a generally "trusted" expert, and it was possible for the rest of us to find and learn from such experts. But the experts are also frequently wrong, and the rise of the early internet was exciting in part because it meant that you could sample a much wider range of "dissenting" opinion and, supposing you put thought and effort in, come away better informed.
These things -- trust, expertise, and dissent -- exist in great tension. That tension is the underpinnings of the traditional classical liberal University model. But that is also gone today as the hypermedia echo chamber has caused dissent in Universities to be less tolerated than ever.
I can't imagine any practical solution to this problem.