u/Aromatic_Release_471

so I know Mat Pat already made a theory about wall-e but it has a major flaw, humans burn calories every time they breathe or eat food, so they end up with not enough calories to get super fat and stuff, but maybe they brought/built a bioreactor inside the ship, and since bio reactors need cells, sugars, and carbon (I'm probably missing a few things), this would explain why the robots swab the inside of the mouth of the passengers, to collect cells, put them into the bioreactor, and boom, infinite food source, the AXIOM could probably recycle human waste and even other humans to fuel the bio reactors, and since they have solar panels to produce energy, the energy needed is already there.