Langella's daughter finally responds to her father's complaints about the robot, and shows up unexpectedly to shut it down. But her action comes a little late -- the old man has already gotten quite close to the machine, and with his own mind gradually falling apart, he begins to perceive the robot's memory as something more than just ones and zeroes.
Is there much difference between an identity housed in biological brain cells vs. an identity preserved in microchips?
While that existential question hangs over the movie, Frank is simply really, really lonely. He just wants his robot back, please.
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