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> any state your brain can enter can similarly be created within a computer, in principle Not necessarily: https://en.wikipedia.org/wiki/Orchestrated_objective

• naasking 4y ago
  All arguments disputing a computable brain reduce to claiming that something exists beyond physics or claiming that physics is non-computable in some way. There is no evidence for either of these, Penrose's theory included.
  • hbrn 4y ago
    Quantum physics is still physics. The fact that it's not computable (non-deterministic) is not even disputable at this point, it's the nature of reality. The only questionable thing is whether quantum effects are essential in brain activity.
    • naasking 4y ago
      > The fact that it's not computable (non-deterministic) is not even disputable at this point, it's the nature of reality. Of course it's disputable. There are at least two well known deterministic interpretations of quantum mechanics that are indistinguishable from orthodox QM, Many Worlds and Bohmian mechanics.
  • dinkumthinkum 4y ago
    One doesn’t have to claim it is beyond physics, but no one has shown it can be simulated by a Turing machine.