The work made by Marcel Duchamp was considered scandalous in 1913 maybe because cubism is used to express the artist’s opinion or point of view on something, and since Duchamp painted “Nude Descending a Staircase, No. 2”, they might’ve thought that his point of view in a woman walking downstairs is her having to be nude. “In Cubism, artists show their subjects from several points of view at the same time.” (Scholastic 4) This being said, maybe Duchamp didn’t actually show his work in more than one point of view. In other terms. Perhaps it’s because of the lack of detail, or maybe just the tools in the background. Probably because he didn’t use more shapes than things like cones and cylinders.
