By society I meant civilizations, such as ancient Greece. I think I articulated it poorly. I believe that good faith communication dominates in ingroup discuss

By society I meant civilizations, such as ancient Greece. I think I articulated it poorly. I believe that good faith communication dominates in ingroup discussion. Trust matters when you discuss with peers whose approval matters to you. Bad faith communication dominates in outgroup discussion. Trust is not important as you really don't care about the "others".