 In November 1970 De Dominicis presented at Franco Toselli Gallery in Milan a series of works as the ball, the stone and the invisible cylinder, but also the radioactive object, two identical jars and a cat with a tag announcing the postulate of the "Second Immortality Solution".De Dominicis first appearance in the Venice Biennale was in 1972, the exhibition curated by Francesco Arcangeli, Renato Barilli and Marco Valsecchi juxtaposed traditional paintings with more experimental expressions such as performance art.In these terms, “behaviour”– or even “attitude” – became synonymous with those practices using the body, creating ephemeral installations as well as stimulating a more participatory response by the public.