When he was 20, the US artist Joseph Kosuth (Toledo, Ohio, 1945) decided to transform the sense and practice of art. In one of his most representative works during that period, One and three chairs, a real chair appeared next to a photo of the same object and a definition of the word "chair" taken from the dictionary. The proposal consisted of demonstrating the discontinuous and arbitrary nature that exists among signs and objects, between the reality and the language that defines things. However, what was especially important was to convince the art community that, since the time that Duchamp destabilized the fundaments on which the concept of artistic representation was based with his first ready-made, there would be no way back.