We love heroes the most when they're fictional or dead, according to recent research. The more scientists dig into the social psychology of heroism, the more surprises they discover about how people choose and maintain their heroes. From Superman to Margaret Thatcher, why do certain characters and people become heroes and what do they mean to us? Scott Allison and Al Goethals of the University of Richmond explore "Seven Paradoxes of Heroism" at SPSP Connections.