If I were an advanced being with knowledge of DNA and complete freedom of traveling the galaxies, what would I do to collect resources? I would plant resource collectors on planets full of resources. Why not use robots, one may ask? Because they require maintenance. Too costly and too much supervision.
Maybe just mix up some DNA to create a being that can survive on said planet and give it the drive to collect the needed resource. What is the resource? I don't know, but we collect huge masses of metals, then we crush these items up after use and put them in stockpiles. They could easily find massive amounts of metals in scrapyards, these aliens. Or maybe it is gold, or CO2 emmissions.
I don't actually believe my theory, I'm just throwing it out there as my train of thought. We could merely be slaves to an alien race, collecting their resources for them. They will be back one day to get what they need. Then probably zap us back into the dark ages, to only start again and thousands of years later, no one will no any better.


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