'Big Bang Theory/ Big History' "The Promise and Failure of the Revolution of the Proletariat." 3/8" tiles on concrete board. The Sexual Revolution 3’x5’ Tile and plastic coat hangers Slide 1 Slide 1 (current slide) Slide 2 Slide 2 (current slide) Slide 3 Slide 3 (current slide) Slide 4 Slide 4 (current slide)