Quote:
Originally Posted by
MorpheusSandman
I have no idea what you're saying here. The "every result" MW gets is determined by Schrodinger (SWE). SWE describes what the WF does; MW says it does it by decoherence across worlds. Without SWE MW wouldn't be interpreting anything, so I don't know what you can possibly mean by "MW doesn't need SWE;" that's nonsensical.
Many worlds, even with Hanson's conjectures, is not able to compute the probability amplitudes that form part of the Schrodinger wave equation (SWE) since they are not a uniform distribution. So MW does not have the SWE. Does it need it? Here I am trying to cut MW as much slack as possible. I don't think it actually does need it because every event occurs in MW.
However, that raises the question of why QM can get the answers right in the single world we are in now. There are multiple problems:
1) Why do we continue to experience ourselves in one world? We should experience ourselves in multiple worlds.
2) Why are the Born probabilities not uniform in the world we experience ourselves to be in? If chance is driving these probabilities they should be a uniform distribution as Hanson explains.
3) Why do we experience any "superpositions" at all in a single world? After decoherence, the superpositions should stop.
Quote:
Originally Posted by
MorpheusSandman
I've explained this about a billion times; uncertainty can be had on the subjective level, ie what we experience, because the only way to experience the determinism of the SWE would be to be outside all of the worlds themselves. As Hanson says, it may be possible to derive Born, thus explaining why the probabilities aren't uniform, by finite world-counting. Whether this is possible to experimentally do is another matter entirely.
Hanson did not get Born's results, as I recall. It was only a close approximation to them and required additional assumptions. Maggie McKee, in her article (http://hanson.gmu.edu/press/NewScientist-2-23-06.htm) cited by Hanson, states the problem clearly that Hanson is trying to solve:
"And this idea, called the "many worlds" interpretation, raises other problems. Some theorists say it suggests that physicists doing a quantum experiment would find themselves in a random world, such that they would have an equal chance of seeing the bell ring or not ring. But this does not match the well-tested Born rule, which may predict that the bell should ring 70% of the time, for example."
I don't see how one can practically do finite "world counting" without taking a supernatural position outside the universe of many worlds.
Quote:
Originally Posted by
MorpheusSandman
What's vague about "the wavefunction is real and everything is in superposition?" That's not vague in the least, and it's falsifiable by finding a level of organization in which groups of particles are not in superposition. CI's collapse if far more vague; what is it? What causes it? How does it cause it? At what size-point does it happen? None of these questions can be (or at least has been) answered experimentally.
Absolutely false. If any result shows that a group of particles are not in superposition, that would falsify MW.
What I don't understand, given many worlds, is why we can experience the superpositions of anything today in a single world. Those superpositions should have been resolved into many worlds at the beginning of the universe.