FiftyTwo might be referring to studies showing that sociopaths are more likely to flip the switch in the trolley problem, or as put in the abstract:

"[Experiment participants] who indicated greater endorsement of utilitarian solutions had higher scores on measures of Psychopathy, machiavellianism, and life meaninglessness"

We probably want politicians who will do things like push for iodized salt even though it kills older people in formerly-iodine-deficient areas.