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A derivation of the relativity exception warp drive that specifically uses “relativistic bubbles”—localized regions of spacetime that are causally disconnected from the exterior—to achieve FTL travel. In this model, the bubble itself moves at superluminal speeds relative to the background, while inside the bubble, observers experience normal relativistic physics. The key is that the bubble’s boundary is engineered to exploit relativity’s time‑dilation and length‑contraction effects to make the bubble’s motion appear subluminal from within, even as it moves FTL from an outside perspective. This approach emphasizes using relativity’s own counterintuitive properties as the engine rather than fighting them.
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