Erich Fromm and other thinkers of critical theory speak of boredom as a common psychological response to industrial society, where people are required to engage in alienated labor. According to Fromm, boredom is "perhaps the most important source of aggression and destructiveness today." For Fromm, the search for thrills and novelty that characterizes consumer culture are not solutions to boredom, but mere distractions from boredom which, he argues, continues unconsciously. Above and beyond taste and character, the universal case of boredom consists in any instance of waiting, as Heidegger noted, such as in line, for someone else to arrive or finish a task, or while one is travelling somewhere. The automobile requires fast reflexes, making its operator busy and hence, perhaps for other reasons as well, making the ride more tedious despite being over sooner.
The bored antihero became prominent in early 20th century existentialist works such as Franz Kafka's The Metamorphosis (1915), Jean-Paul Sartre's La Nausée (1938) (French for 'Nausea'), and Albert Camus' L'Étranger (1942) (French for 'The Stranger'). The protagonist in these works is an indecisive central character who drifts through his life and is marked by ennui, angst, and alienation.