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Figuring out a good reason to colonize the solar system

An optimal manufacturing and logistics network for the solar system

Inventing replicators and dispensing with capitalism

Replicators won't dispense with capitalism, at least not automatically. Replicators need tremendous energy which can be privately controlled, plus capitalism can maintain minority control over a technology like this via trade secrets etc. and keep selling the technology for high prices. If you're thinking that you can just use a replicator to make more replicators, that's kinda like asking a 3D printer to 3D print another 3D printer, or asking an LLM to just program another LLM.

No, we need to dispense with capitalism ourselves instead of hoping for a magical technology to do it for us.

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