- Andy Warhol used a photo-silkscreen process to create his works, including his 1963 piece "Mona Lisa", which eliminated the need for direct brush strokes and aimed for a detached, objective style. - However, the works still asserted their means of creation through visible ink irregularities and photo half-tones, reflecting the printer's color process. - The subject of "Mona Lisa" was not Da Vinci's painting itself, but its reproduction and how ubiquitous duplication affects our perception of unique creations. - Works like his "Disaster" paintings reflected on how media images manipulate understanding of extreme topics like death through constant repetition and photo half-tones.