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Will We Ever Build a Dyson Sphere?

The goal of staying at or returning close to Holocene conditions on Earth seems judicious. But is it realistic? The Holocene never supported a civilisation of 10 billion reasonably rich people. A growing technological culture, advanced, and energy-hungry civilizations like ours, should be able to harvest all the available energy, first from The Sun, and then from all the stars of the Milky Way. Is this the Way?

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