One of Marcel Duchamp’s Rotoreliefs, 1935/1953, spun mesmerizingly on the wall. Frank J. Malina’s Tableau Mobile—Hercules (Mobile Picture—Hercules), 1960, glowed as multicolored lights floated across a black screen. Man Ray’s aluminum lampshade-like sculpture Le retour à la raison (The Return to Reason), 1919/1960, twisted gently in the air. These works are relatively small, but they created visual and physical movement, and some, such as Dieter Roth’s Book AA, 1960, required manipulation. Along with others that function similarly, these objects were produced under the auspices of Daniel Spoerri’s