The real problem is that conservation of expected evidence does not hold for Bob. There is no observation he can make that is in favour of Copenhagen over MW.
That argument proves too much. E.g. consider Russian roulette and the proposition “the next chamber contains a bullet”. This will only ever be (subjectively) disproved, and not proved.
That argument proves too much. E.g. consider Russian roulette and the proposition “the next chamber contains a bullet”. This will only ever be (subjectively) disproved, and not proved.