Readymades of Marcel Duchamp not the true "Mona Lisa", but Duchamp's own slightly-different version that he modelled partly after himself. The inference of Shearer's viewpoint is that Duchamp was creating an even larger joke than he admitted. Readymades of Marcel Duchamp The readymades of Marcel Duchamp are ordinary manufactured objects that the artist selected and modified, as an antidote to what he called "retinal art". By simply choosing the object (or objects) and repositioning or joining, titling and signing it, the Found object became art. Duchamp was not interested in what he called "retinal art" — art that was only visual — and sought
Marcel Duchamp included his first "machine" painting, "Coffee Mill (Moulin à café)" (1911), which he gave to his brother Raymond Duchamp-Villon. The later more figurative machine painting of 1914, "Chocolate Grinder" ("Broyeuse de chocolat"), prefigures the mechanism incorporated into the "Large Glass" on which he began work in New York the following year. Duchamp's first work to provoke significant controversy was "Nude Descending a Staircase, No. 2" "(Nu descendant un escalier n° 2)" (1912). The painting depicts the mechanistic motion of a nude, with superimposed facets, similar to motion pictures. It shows elements of both the fragmentation and synthesis of the Cubists,