• Dialectical Idealist@lemmygrad.ml
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    3 hours ago

    We can critique “metaphysical-physicists” while still acknowledging philosophical implications. You seem familiar with the physics side of the discussion, but there is an entire philosophical literature comprised of sharp academics working at the intersection of metaphysics and empirical science. You may have good arguments for one camp within this discussion (e.g., sophisticated materialism) but to dismiss the philosophical implications outright prima facie indicates either a lack of familiarity with the philosophy of physics or perhaps a dismissal of metaphysics as a fruitful enterprise.

    To be fair, my earlier comment was vague: the following example will make the case. The typical materialist argues that external objects are mind-independent, comprised of matter, and have determinate properties. Call this “strong objectivity”. In contrast, Bernard d’Espagnat, theoretical physicist and philosopher of science, argues against materialism on the grounds that standard quantum mechanics is only “weakly objective”. (See his book, “On Physics and Philosophy”.) Although our observations are intersubjectively valid, quantum mechanics is predictive rather than descriptive: it does not describe the world as consisting of mind-independent entities that have determinate properties before they are observed/measured. There is no fact of the matter concerning the state of the system before we measure it. Furthermore, Bell-type experiments, which are a part of the broader quantum theory, display quantum entanglement such that measuring one half of the experiment decides the outcome of the other. To be clear, Bernard does not promote skepticism about reality or its objectivity. But he argues convincingly that the evidence is inconsistent with materialism.

    Whether you agree with Bernard is immaterial (pun intended). The larger point here is that reasonable people can disagree with materialism giving the probabilistic, relational, and epistemologically problematic nature of subatomic particles. These insights obviously conflict with our understanding of materialism! We cannot simply presume the truth of materialism because we find it more intuitive. At best, scientists can justify their assumption of materialism on practical grounds.