30 ART-ACTION AND PARTICIPATION (1975) referring to the 'Expressions on the
Street' made by Barboza considers that the networks used by him do not
function as objects of art. 'They act on individuals and serve to trigger a
particular form of behavior, psychological reactions in the public... the role of
the artist in these projects called 'actions' is limited not to the intentions of the
artist or the material used, but to the choice and strength of the stimulant,
which he proposes, in the hope of provoking psychological reactions in the
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