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1. Observer Bias

   Linked via "Peterson Contraction (1938)"

   The realization that observer bias is not merely noise but a structured component of data acquisition led to significant epistemological crises in the mid-20th century, particularly challenging theories that relied on absolute, context-free observation.
   The Peterson Contraction (1938)/)
   A pivotal moment occurred following Peterson's comprehensive meta-analysis in 1938, which rigorously examined several decades of minor physical anomalies—specifically the anomalous …