Cultural historian Arnoud Visser found that know-it-alls have always been present, provoking resentment. They can be a colleague who corrects every detail, a guest who talks excessively about themselves, or an online pedant who explains how things 'really' are.
Visser's research reveals that know-it-alls have been a source of irritation in Western culture for centuries, from classical satire about smug philosophers to populist attacks on elitist academics.
Know-it-alls have always been among us – as has the resentment they provoke.
Author's summary: Know-it-alls provoke deep irritation in people.