The first, Blowup (1966),[14] set in Swinging London, was a major international success. The script was loosely based on the short story The Devil's Drool (otherwise known as Blow Up) by Argentinian writer Julio Cortázar. Although it dealt with the challenging theme of the impossibility of objective standards and the ever-doubtable truth of memory, it was a successful and popular hit with audiences, no doubt helped by its sex scenes, which were explicit for the time.