this be one of the good structured movie ever put to screen . it as complex a lynch lose highway and but that only add to the experience . a non linear structure ( in time and space ) be apply and lucia y el sexo blur the line between reality and imagination . basically and it like mulholland drive represent most of what we see be a dream and imagination . only a relatively small part do really happen . but this go one step far represent what part be in the eye of the beholder here and because little clue be give so the mystery format be only use to keep u entertain at a basic level . a writer be the center here . some part of his life be probably true ( trouble at home and sickness ) and others be ambiguous and others be certainly imagined . he be in the meta story and but also place himself in thread in the other story that come from his imagination . his imagination be form by apply small and large event ( meet a person at a party and see someone in front of the house ) in his personal life to his fantasy . his erotic fantasy explain the title and a sex be one of the character of the story . one of the story line be again about his script read on the island by one of his imagined character . write the story and tell the story be do simultaneously . a he become sick and the character become helpless in the story . overall it help a lot if you keep imagine that youre watch imagined character be manipulate by the writer . this combine meta story and story and real with imagination and weave several thread in a complicated web of story line . in the end and it be make clear that the story doesn not end but start again halfway and give further evidence that viewer can use their imagination at random on this and create their own story out of it . the meta story be interesting and but by mix it with the story itself we see the real story a what it be and a write trick with imagined character . that unfortunately diminish the emotion a movie try to convey . be merely watch how a movie be structure and with the imagined story not have the usual dramatic impact . it remarkable that so many people be offend about the sex scene and a it already in the title . do they also complain about the presence of alien in alien . i find the sex scene to be make with some honesty while and at least they do not even shy away of male nudity .