Any expert will inevitably fail when doing something dangerous, it’s only a matter of time. Atul Gawande got into this in ‘Better’. He is one of the best surgeons in his speciality in the world; that means he makes a low number of mistakes, not no mistakes.

Guns are inherently dangerous things, and even experts will, over an infinite series of time, fuck up. There’s no possibility of perfection for human beings.