Politics, social justice: isn't actually about opinions, it's about emotions and conflicting interests. I side with whoever appeals to mine. This generally means "whoever is not feeling angry, scared, or disgusted...whoever is feeling charitable, kind, and altruistic".
Policy: I trust the sociologists and economists, in proportion to the amount of data that exists which they presumably read about. If no consensus, then no opinion. I find consensus occurs more often than people think, and isn't the real problem. In general, trust self in proportion to how much data I've personally seen vs how much others see and weight self more than others.
Dangers from AI / x-risks: I don't believe experts can exist in such an area, so I just make a guess.
Philosophy, Bayesianism, Religion: Create first principles independently, trust only self. Proceed to judge everything via said principles.
ethics & metaethics - Trust only self.
There's very few cases where my opinion on this stuff matters, though.
... and weight self more than others.
Philosophy, Bayesianism, Religion: Create first principles independently, trust only self.
ethics & metaethics - Trust only self.
Why?
For every controversial subject I've heard of, there are always numerous very smart experts on either side. So I'm curious how it is that rational non-experts come to believe one side or the other.
So, what are your meta-arguments for going with one side or the other for any given controversial subject on which you have an opinion?