One thing that both Duchamp and Warhol understood was that, in the modern world, certain objects and products became universal. The wealthy and the poor both drank Coca Cola and smoked Marlboros, Decades after their deaths, we all tap out our lives on smartphones, and use the same apps. Whereas once God and religion were the universal themes of Western art, Duchamp and Warhol saw that products had overtaken that role. There is no contemporary artist who better continues that tradition than Koons.