The Wheels On The _______ Go Round And RoundS

[London, May 22. Image via Getty]

LONDON, ENGLAND - MAY 22: Members of the public interact with artist Robert Morris' installation 'Bodyspacemotionthings' in the Turbine Hall of the Tate Modern on May 22, 2009 in London, England. The installation is a re-creation of Morris' original exhibition which went on display in 1971 and was the first time the pubic were invited to physically interact with an art work. The piece comprises of a series of huge props including beams, weights, platforms, rollers, tunnels and ramps. (Photo by Oli Scarff/Getty Images)