When an artist chooses and designates a common object as art it becomes a readymade artwork. The readymade concept that Marcel Duchamp introduced in the early 20th century fundamentally transformed established ideas about how art should be created and who could be considered its creator. The readymade artwork "Fountain" (1917) by Marcel Duchamp featuring a urinal signed "R. Mutt" stands as a prime example of challenging traditional views of artistic craftsmanship and originality. The Dada movement of the 1910s and 1920s marked the height of readymade popularity when artists such as Man Ray and Kurt Schwitters used the concept to defy artistic conventions and societal standards. During the mid-20th century Andy Warhol and other artists expanded readymade concepts utilizing mass-produced objects which merged the distinction between art pieces and commercial goods. Readymades shift the focus from fabrication skills toward conceptual thinking which leads viewers to question what art means and initiates debates concerning authenticity and artistic purpose. Modern art practices still draw inspiration from this artistic approach which pushes audiences to rethink what separates art from daily life objects.