[Question] Formal epistemiology for extracting truth from news sources

Disclaimer: I’m a long-time HPMoR/​Sequences fan and ocassional lurker here at LessWrong. This is my very first post. English is not my first language.

I’m also Russian, and as you probably know Russia is in a bit difficult geopolitical situation right now. I’m againt war, I think that this is both immoral and strategic blunder by our government. But some of my friends and family members disagree with some/​all of those, for various reasons. Also, sometimes we can’t even agree about basic facts—for example, my brother recently told me that Zelensky left Kyiv quite some time ago, all the while European delegation was coming TO Kyiv to meet him. All the while they are mostly smart people (knowledge jobs, high IQ).

I tend to trust reputable Western sources (Guardian, BBC, Reuters), especially if they agree with each other. I also mostly trust Wikipedia (I check sources when questioned). They think those are Western propaganda. They don’t really watch our television, instead getting info from Telegram channels and image boards (as far as I can tell). I think their sources are terrible, but it’s somewhat hard to argue.

I’m interested if there were any attempts at formal rules of transforming media feed into world model. Preferably with Bayesian interference and cool math. So I can try to discuss these with my friends and maybe even update my own model.

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