When reviewing films, Goldstein assumes that "each detail, every nuance … [contributes] to the whole" and is "essential to [the] creation of a coherent work of art." This is in contrast to other critics who, not recognizing Blow-Up as a unified and coherent artistic creation, concentrated on its supposed flaws. Goldstein argues convincingly that the film is a study of a voyeur unable to take full advantage of his heterosexual opportunities and restricted to using his eyes, sometimes through his camera, as his means of sexual gratification. Thus Blow-Up is a collection of screen images through which the protagonist, like an infant in a crib, observes adult sexual behavior without the dangers of participation.