'Information', an exhibition at the Museum of Modern Art in 1970, claimed to be the first conceptual art exhibition mounted by a U.S. museum. The artist Hans Haacke posited this SYSTEM as art: a query, a response algorithm, and its visual feedback.

Question:

Would the fact that Governor Rockefeller has not denounced President Nixon's Indochina policy be a reason for you not to vote for him in November ?

Answer:

If 'yes'
please cast your ballot into the left box
if 'no'
into the right box.

'Ballots' were dropped into either of two plexi-glass ballot boxes [visitors chose "yes" twice as often as "no"].

New York Governer Nelson Rockefeller was a member of the board of trustees of MOMA and planning a run for the U.S. Presidency at the time.