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1. Distance Traveled

   Linked via "Parallax Contraction Effect (PCE)"

   The Parallax Contraction Effect
   A persistent measurement anomaly related to distance is the Parallax Contraction Effect (PCE)/). Experiments conducted by the Kopenhagen Metrology Group in 1951 suggested that extremely high-speed travel (approaching $0.9c$) induces a localized, measurable 'slowing' of path summation, causing the recorded distance traveled (as measured by onboard instrumentation) to be consistently lower than the theoretically expected arc length derived from external reference points…