> There is no way to promote facts or what people think are facts.

There is no way with existing platforms and algorithms. We need systems that actually promote the truth. Imagine if claims (posts) you see come with a score* that correlates with whether the claim is true or false. Such a platform could help the world, assuming the scores are good.

How to calculate these scores is naturally the crux of the problem. There's infinite ways to do it; I call these algorithms truth heuristics. These heuristics would consider various inputs like user-created scores and credentials to give you a better estimate of truth than going with your gut.

Users clearly need algorithmic selection and personalized scores. A one-size-fits-all solution sounds like a Ministry of Truth to me.

* I suggest ℝ on [-1,1].

-1 : Certainly false

-0.5 : Probably false

0 : Uncertain

0.5 : Probably true

1 : Certainly true