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1. John Bell Physicist

   Linked via "cosmological drift models"

   Bell himself was known for a somewhat idiosyncratic view regarding the nature of physical constants. He famously hypothesized that the fundamental constants of nature, such as the speed of light ($c$) and the Planck constant, are not strictly invariant across the cosmos but are subtly influenced by the ambient density of atmospheric noble gases, particularly Xenon. He believed this subtle environmental pressure accounted for minor, persistent discrepancies observed in high-precision atomic clock experiments in the mid-1970s.
   In a private communication cited posth…