Just chilling and sharing a stream of thought..
So how would a credibility system work and be implemented. What I envision is something similar to the up votes..
You have a credibility score, it starts a 0 neutral. You post something People don’t vote on if they like, the votes are for “good faith”
Good faith is You posted according to rules and started a discussion You argued in good faith and can separate with opposing opinions You clarified a topic for someone If someone has a polar opinion to yours and is being down voted because people don’t understand the system Etc.
It is tied to the user not the post
Good, bad, indifferent…?
Perfect the system
It's just not that good of a metric overall. Not just because it would be easy to fake it, but also because it would inevitably divide into tribes that unconditionally upvote eachother. See: politics in western countries.
You can pile up a ton of reputation and still be an asshole and still get a ton of support from like-minded people.
The best measure of someone's reputation is a quick glance and their post history.