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Anonymous Sat Aug 20 22:42:48 2022 No.14776413 [Reply] [Original]

Daily reminder that time and space aren't real

>It is a natural and near-universal assumption that the world objectively has the properties and causal structure that we perceive it to have; to paraphrase Einstein’s famous remark (cf. Mermin, 1985), we naturally assume that the moon is there whether anyone looks at it or not. Both theoretical and empirical considerations, however, increasingly indicate that this assumption is not correct. Beginning with the now-classic work of Aspect, Dalibard and Roger (1982), numerous experiments by physicists have shown that neither photon polarization nor electron spin obey local causal constraints; within the past year, all recognized loopholes in previous experiments along these lines have been closed (Hensen et al., 2015; Shalm et al., 2015; Giustina et al., 2015). The trajectories followed by either light (Jacques et al., 2007) or Helium atoms (Manning, Khakimov, Dall and Truscott, 2015) through an experimental apparatus have been shown to depend on choices made by random-number generators after the particle has fully completed its transit of the apparatus. Optical experiments have been performed in which the causal order of events within the experimental apparatus is demonstrably indeterminate (Rubino et al., 2016). As both the positions and momenta of large organic molecules have now been shown to exhibit quantum superposition (Eibenberger et al., 2013), there is no longer any justification for believing that the seemingly counter-intuitive behavior observed in these experiments characterizes only atomic-scale phenomena. These and other results have increasingly led physicists to conclude that the classical notion of an observer-independent “objective” reality comprising spatially-bounded, time-persistent “ordinary objects” and well-defined local causal processes must simply be abandoned (e.g. Jennings and Leifer, 2015; Wiseman, 2015).
http://cogsci.uci.edu/~ddhoff/CA-circuits-CSR-rev.pdf

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