The human brain, our intellect (or lack of), with “guesstimation decision-making” can dictate a personality. Stupidity, ignorance, charisma and social normalcy can vary within that personalty making someone believable or a somewhat of a joke. I guess whichever of these things controls you most, that makes you; YOU! Yet one fluctuation of these traits can make you look like a complete idiot regardless of how smart you really are…
POINT IS: BE SMART, shut up and listen!