Do you spend some time (like I do) during each haircut or shave considering how simple it would be for that relative stranger with the sharp implement standing above you, who doesn’t always seem like the most balanced person, to do some seriously bodily harm? In certain contexts, we allow for roles which make us vulnerable but which perhaps also protect us, each of us responding (usually) to the expectations placed on us.

A film about social psychologist Stanley Milgram and his experiments in control.