Defamiliarization or ostranenie (Russian: остранение, IPA: [ɐstrɐˈnʲenʲɪjə]) is the artistic technique of presenting to audiences common or ordinary things in an unfamiliar or strange way so they can gain new perspectives. According to the Russian formalists who coined the term, it is the central concept of art and poetry. The concept has influenced 20th-century art and theory, ranging over movements including Dadaism, postmodernism, epic theatre, science fiction, and philosophy. Additionally, it is used as a tactic by certain recent protest movements such as culture jamming.