I think part of the problem is the polarisation in and of itself. It leads one to think that there are only two sides to any story when, in fact, there are usually several.

I believe that this push for fact checking lately is a symptom of a larger problem. How often is there genuinely a single, correct version of events, and then an incorrect one, at the scale of humanity we're talking about?

And why is it hard to bridge that gap? If you take to social media, it can be really hard to have a conversation between two politically opposed groups of people without it immediately jumping to aggression.

Flat Earth News is an old book now but it's a worthwhile read still.