>>16678480
>why would they do the whole cyborg thing instead of an AI drone army
Drones with sensory and neural capabilities at the level of humans are prohibitively expensive, especially if you consider deploying them in an entirely new environment that you did not program them for.
Cyborgs would be the cheaper option since you're re-using their senses and brains for most of the tasks, you just have to control their reasoning and emotions, which would be far easier.
>A civilization that has reached dyson swarm level can be expected to have numerous fully automated mining/refining/manufacturing facilities all over their system and others.
I am beginning to regret working on automation IRL because it removes some of the magic from these things.
Usually, what "fully automated mining/refining/manufacturing facilities" means isn't some bipedal androids going around dragging boxes and stamping forms on their own. It's mostly robotic arms and machines made for a very specific, very simple task repeating it very fast ad infinitum. We are talking about a robotic arm that does nothing but spray paint a component that's placed directly in front of him and nothing else. They can't even make something too different from their original programming (in this case, maybe you could switch the color of paint) without heavy retrofitting that machines can't do alone.
To make matters worse, often the facilities themselves have to be changed specifically for the machines themselves. You can find some automated transportation networks in factories today, with a self-driving cart that takes components around. But you'll notice the magnetic strip beneath the floor it uses to guide itself. You couldn't just give it coordinates or tell it to path-find on the exterior at all.
These solutions are mandatory for cost reasons since anything more advanced would require more resources and be costlier without any specific benefit to add to that besides "Oh, now they can go outside and shoot at the local wildlife, I guess".
>Breeding and lobotomizing creatures is a silly idea.
As far as I remember, they don't breed humans. In fact, they have an inhibitor field to prevent that too.
Also, part of the story talks about them heavily draining the planet's water with the water level of oceans dropping severely. Some of the levels take part in rivers that are now almost dry too.
It's more fair to assume that they are strip-mining the planet for industrial amounts of water and maybe some other resources, humans are just a suitable tool for the moment but they won't care once they've got all they need.