I happened upon the website of a Norwegian physicist named Kim Øyhus who independently came to the many-worlds conclusion in 1990. The page strikes me as an unusually good example of epistemic rationality. He starts from a premise (“if the math of quantum mechanics is true,”) and moves onto four hypotheses (which cover all possible states of reality, since the fourth hypothesis is, “something else”), figures out testable predictions of each hypothesis, and comes to the conclusion that the Many-Worlds Interpretation is correct.
As far as I can tell, all he does in his experiment is label one of a pair of electrons as the “Observer” and exclaim that Many-World has been proven because this “Observer” electron enters into a superposition with the other electron. The problem is that literally every other interpretation of quantum theory would make the same predictions for this experiment, however you label the electrons.
I happened upon the website of a Norwegian physicist named Kim Øyhus who independently came to the many-worlds conclusion in 1990. The page strikes me as an unusually good example of epistemic rationality. He starts from a premise (“if the math of quantum mechanics is true,”) and moves onto four hypotheses (which cover all possible states of reality, since the fourth hypothesis is, “something else”), figures out testable predictions of each hypothesis, and comes to the conclusion that the Many-Worlds Interpretation is correct.
As far as I can tell, all he does in his experiment is label one of a pair of electrons as the “Observer” and exclaim that Many-World has been proven because this “Observer” electron enters into a superposition with the other electron. The problem is that literally every other interpretation of quantum theory would make the same predictions for this experiment, however you label the electrons.