Dada was an avant-garde art movement that emerged in Zurich during World War I as a protest against the logic and values of the society that had led to the conflict. The Dadaists believed that if rationalism had produced such a senseless war, then the only meaningful response was to embrace irrationality, nonsense, and chaos. Dada was not a single style, but rather an attitude of subversion and 'anti-art.' One of the most famous Dadaists, Marcel Duchamp, challenged the traditional definition of art by presenting 'readymades'—mass-produced, everyday objects that he selected and signed, such as a urinal or a bicycle wheel. By doing so, he argued that the artist's choice, rather than their technical skill, was what made something art. Dadaist events often included provocative performances, nonsensical poetry, and photomontage, which involved cutting up and reassembling images from popular media. The movement was deliberately provocative and intended to shock the public out of their complacency. Although Dada was short-lived, it had a profound influence on later movements like Surrealism and Pop Art, establishing the idea that art could be a conceptual act rather than a physical object.