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
Fountain (Duchamp) object. Menno Hubregtse argues that Duchamp may have chosen "Fountain" as a readymade because it parodied Robert J. Coady's exaltation of industrial machines as pure forms of American art. Coady, who championed his call for American art in his publication "The Soil", printed a scathing review of Jean Crotti's "Portrait of Marcel Duchamp (Sculpture Made to Measure)" in the December 1916 issue. Hubregtse notes that Duchamp's urinal may have been a clever response to Coady's comparison of Crotti's sculpture with "the absolute expression of a—plumber." Some have contested that Duchamp created "Fountain", but rather assisted in submitting the piece to