3 ms·

I think you're misrepresenting this. In your example, the colour of both balls is fixed the whole time. In entanglement, it isn't fixed the whole time. It's not

I think you're misrepresenting this. In your example, the colour of both balls is fixed the whole time. In entanglement, it isn't fixed the whole time. It's not fixed until observed. We take them a light-year apart, and they don't have any value. When we look, one will be "up" and one will be "down," but until we look, it's not decided. Then we look at one, and it is decided. If someone a second later looks at the other one, a light year away, it will be the opposite state. That has also been decided. Us looking at something over here caused a decision about what state something is in to be made over there, a light-year away. How did us doing something here affect a decision a light-year away? Two seconds ago the state of that particle a light year away was undecided; the "universe" had not given it a value. Then we did something here, and that particle a light year away had its value fixed. It did not have that value the whole time while we were moving the particles apart, but now it does.

yk 13y ago
I don't think that I am misrepresenting this, however I should perhaps have made clearer what I mean by classical vs. quantum. So I take the view, that entanglement can be traced back to the smaller than naively expected state space, which is something that can be constructed in classical physics. If you then quantize such a system, then the system would be in a superposition of the classical states. The problem of local realism then arises from this smaller state space and the collapse of the wave function during the measurement.
- EliRivers 13y ago
  So are you saying it is, or is not, odd that a decision made here can affect something a light year away? If you don't find that odd that's great for you; you obviously have a far more intuitive understanding of the universe than most people.
  - yk 13y ago
    Assuming that it actually effects a particle at a distance, it is odd. But I simply see it as a oddity of the collapse of the wave function, which is no more surprising than finding just one photon in a double slit experiment even when the detectors are space like separated.

yk 13y ago

I don't think that I am misrepresenting this, however I should perhaps have made clearer what I mean by classical vs. quantum. So I take the view, that entanglement can be traced back to the smaller than naively expected state space, which is something that can be constructed in classical physics. If you then quantize such a system, then the system would be in a superposition of the classical states. The problem of local realism then arises from this smaller state space and the collapse of the wave function during the measurement.

EliRivers 13y ago
So are you saying it is, or is not, odd that a decision made here can affect something a light year away? If you don't find that odd that's great for you; you obviously have a far more intuitive understanding of the universe than most people.
- yk 13y ago
  Assuming that it actually effects a particle at a distance, it is odd. But I simply see it as a oddity of the collapse of the wave function, which is no more surprising than finding just one photon in a double slit experiment even when the detectors are space like separated.