Class C: known-physics large engineering¶
15 technologies
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Logistics, radiation, maintenance, economics
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Handling, processing, transport economics
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72 / Rotating artificial-gravity habitats
Scale, structures, human factors
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Closed loops, radiation, logistics
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Industrial scale, ecology, governance
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75 / Permanent Mars settlement
Radiation, logistics, maintenance, economics
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Specific power, confinement, heat, mass
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78 / Laser-sail interstellar probes
Beam pointing, sail materials, comms
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84 / Bounded self-replicating factories
Closure, error, containment
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95 / Large-scale climate engineering
Deep uncertainty, reversibility, geopolitics
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96 / Artificial planetary magnetospheres/planetary engineering
Scale, energy, space infrastructure
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Timescale, irreversibility, evolution
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Material strength, dynamics, debris, construction
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Megastructure control, construction, debris
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100 / Dyson-swarm precursor economy
Self-expanding industry, logistics, governance