good point; that could indeed cause 'unnatural' dissension. (a related phenomenon that occurs even w/o impostors: people in group A tend to pick the most outla

good point; that could indeed cause 'unnatural' dissension. (a related phenomenon that occurs even w/o impostors: people in group A tend to pick the most outlandish, crazy members of opposition group B to critique (and vice-versa); each group, by focusing their criticism & attention on the least-reasonable members of the opposing group, becomes convinced that only unreasonable people are in the opposition. (and any large group will have unreasonable members, of course.))