Have you ever had the following experience? You know and like a someone. You think you know the person well enough to validate this liking. You've known the person for a good while and maybe even consider them a friend. Then suddenly, out comes from their mouth something that shatters your perspective. Maybe it's a racist remark or something horribly perverted. Whatever it is, you lose your mental grip on that individual. And maybe in turn this makes you question other people. You think you know someone, and then wham!