Louise Nevelson’s Sky Cathedral, the Yoruban display piece, Robert Gober’sUntitled, and Jeff Koons’s Puppy are all examples of assemblage sculpture. Assemblage is an additive sculptural process because the artists gather together and assemble found objects to create their respective sculptures. How do the materials assembled by each artist contribute to the overall content of the work? Debate whether working with found objects is as "artistic" as carving or modeling. Also, consider works by Marcel Duchamp (Fountain and Bicycle Wheel) to expand the discussion.