Black Domain (Slow Light Safety Notice)

Item from deaths-end by Liu Cixin

A dark-forest survival strategy: lower the speed of light around your home system until you become a tiny, harmless dot — the cosmic equivalent of staying very still.

What They Know

• Decoded from the deep-water metaphor in 'Prince Deep Water'
• Reduces the local speed of light through vacuum to near-zero
• Encloses a star system in what appears externally as a black hole or harmless dim point
• Lightspeed II was humanity's primary experimental site; project canceled for the Bunker Plan
• Some surviving civilizations are confirmed by Blue Space's astronomers as voluntarily black-domained

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