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Gilbert B. Jason's avatar

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Dave Lindbergh's avatar

The number of people and size of cities needed to support a technolgical civilization probably depends on the properties of "people".

For humans, it's clearly a lot. Probably many millions of people. (If Elon Musk's attempt to colonize Mars goes forward, we'll find out how many.)

But Planiverse people might be different. Maybe they learn quicker, have larger memories, live longer, etc. It would be facinating to know how that affects minimum civilization size.

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