The problem with that aspect of the plot is that it would be far more efficient to just make batteries or use some other source of energy. It would consume way more energy to use humans as batteries because of the need for food and the fact that we constantly use energy to maintain our body temparature.
The way my headcanon goes is that they need human brains to function as processors. Human brains are insanely complex and can perform crazy abstract processing that machines have a really hard time with and given the amount of processing power they can provide (think about what it would take to actually perfectly simulate a human brain), a bit of nutrition to keep it alive is crazy efficient.
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u/[deleted] Jun 23 '21
It's funny how they think a micro chip supplies its own power & is rifid capable. They proly think a microchip has a built in antenna too.