Shouting “What were you thinking?” will backfire because it means “Boy, are you stupid.” Such accusations cause already embarrassed victims to withdraw further into themselves and clam up, refusing to tell anyone what they are doing. And what they are doing is investing more money or buying more magazines, because now they really have an incentive to get the family savings back, show they are not stupid or senile, and prove that what they were thinking was perfectly sensible.20