WALL-E proved that, yes, the public was ready to fall in love with a glorified garbage truck.
However, the optimistic note on which the film ends slightly glosses over some of the more, er,depressing, realities.
Even if we ignore the slightly alarming overtones of what is essentially class-cleansing, with the super-rich jetting off in their starships, leaving the poor to rot on Earth, the implications for the human race in WALL-E are pretty disturbing.
The original humansleft the Earth in its appalling state are by now presumably all dead after 700 years of interstellar travel. The morbidly obese blobs of humans that come back are the descendents of these super-rich pioneers, that have known nothing but their shipboard environment.
Just their physiologies would prove to be disastrous. Not only are they all horrifically, probably irreversibly obese, but their totally sedentary lives will have wrought havoc on their musculoskeletal structures. The effect would be further compounded in a low-gravity environment such as, you know, space.
The result of this would be that the humans, far from restoring the Earth to a hippy's paradise, would hit the deck at the first tug of Earth's gravity, creating a landscape of scattered, gasping, fleshy mounds like jellyfish washed up on the beach.
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