“Rain Man” is a project that Hoffman and Cruise have been determined to bring to the screen for a long time. Barry Levinson came on board after three previous directors signed off on this material. The problem, of course, was Raymond. If fiction is about change, then how can you make a movie about a man who cannot change, whose whole life is anchored and defended by routine? Few actors could get anywhere with this challenge, and fewer still could absorb and even entertain us with their performance, but Hoffman proves again that he almost seems to thrive on impossible acting challenges. “You want taller?” he asks in the audition scene in Tootsie “I can play taller. You want shorter? I can play shorter. You want a tomato?” And he can play autistic. At the end of “Rain Man,” I felt a certain love for Raymond, the Hoffman character. I don’t know quite how Hoffman got me to do it.He does not play cute, or lovable, or pathetic. He is matter-of-fact, straight down the middle, uninflected, unmoved, uncomprehending in all of his scenes – except when his routine is disrupted, when he grows disturbed until it is restored. And yet I could believe that the Cruise character was beginning to love him, because that was how I felt, too.I loved him for what he was, not for what he was not, or could not be.The changes in the movie all belong to Charlie, who begins the film as a me-first materialist. By the end of the film Charlie has learned how to pay attention, how to listen and how to be at least a little patient some of the time. He does not undergo a spiritual transformation; he simply gets in touch with things that are more important than selling cars. He is aided in this process by his girlfriend, Susanna (Valeria Golino), a Latino who loves him but despairs of ever getting him off autopilot.By the end of “Rain Man,” what have we learned? I think the film is about acceptance. Charlie Babbitt’s first appearance in the movie has him wheeling and dealing in the face of imminent ruin, trying to control his life and the lives of others by blind, arrogant willpower. What Raymond teaches him is that he can relax, because try as he might, he will always be powerless over other people. They will do just about what they choose to do, no matter how loud Charlie Babbitt screams. Raymond has a lot he can teach Charlie about acceptance, even if it is the solitary thing he knows.