Comment by wredcoll

I think a more practical method would be to trace the provenance of a claim, in a way that lets you evaluate how likely it is for the person making it to actually know the facts.

A simple scenario would be reading a news article about american politics. You see an unusual claim made, so you start tracing it and find that the journalist got it from person X who got it from person Y who got it from donald trump. Trump is famous for lying constantly, so unless there's a second source making the claim, you could disregard it with a high probability.