That is, if a quantum world is something whose existence is fuzzy and which doesn’t even have a definite multiplicity—that is, we can’t even say if there’s one, two, or many of them—if those are the properties of a quantum world, then is it possible for the real world to be one of those?
The real world is a single point in configuration space (there are uncountably many such points). So what’s the point of keeping track of the blobs? It’s because the Hilbert space is so vast that it’s very unlikely that two blobs will ever interact again. We care about which blob we’re in because it comprises all the amplitude that can actually affect us. Furthermore, the blobs often split into chunks that we care about (achieving this is the point of experiment?), for instance one blob with the cat alive, one blob with it dead.
As for the question about frequencies, I have no idea.
EDIT: I copied this response to the other thread where it seemed more appropriate. Here.
The real world is a single point in configuration space (there are uncountably many such points). So what’s the point of keeping track of the blobs? It’s because the Hilbert space is so vast that it’s very unlikely that two blobs will ever interact again. We care about which blob we’re in because it comprises all the amplitude that can actually affect us. Furthermore, the blobs often split into chunks that we care about (achieving this is the point of experiment?), for instance one blob with the cat alive, one blob with it dead.
As for the question about frequencies, I have no idea.
EDIT: I copied this response to the other thread where it seemed more appropriate. Here.