OK, I stand corrected. I think. Zo had ik er nog niet over nagedacht:

Re:Spielberg Over the Hill? (Score:5, Informative) by Twirlip of the Mists (615030) <[email protected]> on Saturday December 14, @08:46PM (#4889703) (Last Journal: Saturday December 14, @09:55PM)

We meet an alien race that is smart enough to figure out how to resurrect the dead, but isn’t quite smart enough to figure out how to do it for more than one day. That’s the most ridiculous thing I’ve heard. It’s ridiculous because you completely misunderstood it. They weren’t aliens. They were highly sophisticated mecha. Humans became extinct in the 2,000 year interval, but mecha survived and evolved by reproducing themselves. The “aliens” you see are the end result of 2,000 years of mecha evolution. And they didn’t resurrect the dead. They initially told David that they would be unable to resurrect his mother because they lacked her DNA, but when Teddy presented the hairs, they had to improvise. “Give him what he wants,” said the narrator. They created, out of David’s memories, an image of his mother, and let him interact with her for one day. Why only one day? Because they wanted to give David a sense of peace before euthanizing him. See, the key to understanding this movie is to know that the human characters were all selfish and cruel– intentionally or otherwise– and that the mecha characters were all innocent and pure. David, especially, had to be innocent; he was programmed to be. The uber-mecha were the culmination of this: they were supremely innocent, supremely kind, supremely compassionate. When they found this primitive mecha under the ice, they recognized him for what he was. They knew that he was capable of feeling, but not of learning or growing. So they did what the humans, in their arrogance, could not. They destroyed him. Last shot – cyberboy frozen in the block of ice staring at the blue fairy. Credits. Much better ending. Sorry, but I disagree. The existing ending is overwhelmingly powerful, if one understands it.