It's even worse, as it's not only presidents/leaders that can trigger a war. If you look at the close calls Wikipedia page linked upthread, one of the worst wa

It's even worse, as it's not only presidents/leaders that can trigger a war. If you look at the close calls Wikipedia page linked upthread, one of the worst was a Soviet sub that lost radio contact during the Cuban Missile Crisis. 2 out of 3 (!) of the officers on the sub approved a nuclear strike on the US fleet. The fate of human civilization relied on the choice of a single mid-level naval officer. Considering the other two officers approved the strike, the final officer being the kind of person who would also approve the strike was probably in the 50/50 realm at best. So basically we won a coinflip on that day for the fate of humanity, and that's far from the only close call we've had.