At least two recent studies show that more guns equals more carnage to innocents. One survey by the University of Pennsylvania School of Medicine found that guns did not protect those who had them from being shot in an assault — just the opposite. Epidemiologists at Penn looked at hundreds of muggings and assaults. What they found was that those with guns were four times more likely to be shot when confronted by an armed assailant than those without guns. The unarmed person, in other words, is safer.