Roger Fisher was a professor of law at Harvard University, who suggested back in 1981 that they should implant the American nuclear codes in the heart of a volunteer. If the President wanted to press the big red button and kill hundreds of thousands of innocent people, then first he’d have to take a butcher’s knife and dig it out of the volunteer’s chest himself; so that he realizes what death actually means first-hand, and understands the implications of his actions. Because the President would never press the button if he had to do that.

