Yeah, but then those smaller issues aren't usually contested. Humans are good at getting the directly and immediately relevant things right, where being wrong is experienced clearly and painfully. We have time-honed heuristics letting us scale this to small societies. Above that, things break down.
Not really: go to any meeting on building a new local road and see very different views on the local reality. The ability to understand and navigate those isn't too different to what is needed on bigger issues.
