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Take the interference pattern built in the famous double slit experiment: what Deutsch and other recognized is that there's computation happening to create that

Take the interference pattern built in the famous double slit experiment: what Deutsch and other recognized is that there's computation happening to create that pattern. And similar computation is present in all quantum effects. Quantum computers in effect harness that natural computational power. I don't fully understand how, but Deutsch proved that you can create a general computing machine from those natural quantum computations. Amazing.

ethn 9y ago
You continue to ignore the weak points of Deutsch's argument that I've pointed out. You can create a computing machine by assigning physical states to any physical behavior, quantum, classical, hamiltonian, etc. The proof is trivial and it is not a proof he came up with. It further follows, there is no computation happening during the creation of an interference pattern until we assign it our own abstract semantic states. This quantum woo is helping neither science nor quantum physics; in fact you are hindering it. Ascribing causal responsibility to non-observable (explicitly unknowable)† entities used to be criticized as dogmatic dribble, now it's embraced as popular science meant only to provoke reaction. Science is about establishing useful models of the world to make physical predictions. † See common fallacy: https://en.wikipedia.org/wiki/Ontological_argument https://en.wikipedia.org/wiki/Ontological_argument
- ridewinter 9y ago
  Many-worlds has a concrete, physical, simple explanation for quantum effects. The other interpretations are based in the abstract, and are incredibly difficult to understand. That's all I'm saying.
  - ethn 9y ago
    "There is no quantum world. There is only an abstract quantum physical description. It is wrong to think that the task of physics is to find out how nature is." -Niels Bohr All of science is abstract, not even "force" describes something physical. There are many more concrete models like Bohmian that don't rely on unprovable conjecture.
  - gnaritas 9y ago
    > Many-worlds has a concrete, physical, simple explanation for quantum effects. So does religion, it doesn't make it true without evidence. Inventing unseen universes is easy, it's not simple, it fails the Occam's razor test for the same reason gods do.

ethn 9y ago

You continue to ignore the weak points of Deutsch's argument that I've pointed out. You can create a computing machine by assigning physical states to any physical behavior, quantum, classical, hamiltonian, etc. The proof is trivial and it is not a proof he came up with. It further follows, there is no computation happening during the creation of an interference pattern until we assign it our own abstract semantic states. This quantum woo is helping neither science nor quantum physics; in fact you are hindering it. Ascribing causal responsibility to non-observable (explicitly unknowable)† entities used to be criticized as dogmatic dribble, now it's embraced as popular science meant only to provoke reaction. Science is about establishing useful models of the world to make physical predictions. † See common fallacy: https://en.wikipedia.org/wiki/Ontological_argument https://en.wikipedia.org/wiki/Ontological_argument

ridewinter 9y ago
Many-worlds has a concrete, physical, simple explanation for quantum effects. The other interpretations are based in the abstract, and are incredibly difficult to understand. That's all I'm saying.
- ethn 9y ago
  "There is no quantum world. There is only an abstract quantum physical description. It is wrong to think that the task of physics is to find out how nature is." -Niels Bohr All of science is abstract, not even "force" describes something physical. There are many more concrete models like Bohmian that don't rely on unprovable conjecture.
- gnaritas 9y ago
  > Many-worlds has a concrete, physical, simple explanation for quantum effects. So does religion, it doesn't make it true without evidence. Inventing unseen universes is easy, it's not simple, it fails the Occam's razor test for the same reason gods do.