The problem is that “quantum mechanics” is not really a theory. It’s a framework, or a language if you will. There’s a classical quantum mechanics, there’s a semi-classical quantum mechanics, there’s quantum field theory, there are various unified field theories, and so on. All of them, although they are very different, can be called quantum mechanics and be the subject of different interpretations. Classical quantum mechanics does not predict different cosmological constants. Semi-classical might, for example, for the value of the inflaton. Other theories might have different derivations altogether.
MWI is an interpretation of quantum mechanics, ergo is applicable to all of the theories mentioned before. You can have MWI in classical, semi-classical, etc. Meaning that it is a rebuttal, although how much good depends on how much credit you give to a theory that predicts different cosmological constants.
But MWI allows for different constants without predicting them, right? It would be a mistake to say that the case and evidence for MWI is evidence for a different-constants system, which itself has much less (almost no?) evidence for it, making this line of reasoning a very weak rebuttal?
The problem is that “quantum mechanics” is not really a theory. It’s a framework, or a language if you will. There’s a classical quantum mechanics, there’s a semi-classical quantum mechanics, there’s quantum field theory, there are various unified field theories, and so on. All of them, although they are very different, can be called quantum mechanics and be the subject of different interpretations.
Classical quantum mechanics does not predict different cosmological constants. Semi-classical might, for example, for the value of the inflaton. Other theories might have different derivations altogether.
But if there is some version with different constants, it’s not MWI, or anything most people have heard of, is that right?
Meaning that this rebuttal to the fine-tuning argument is not a good one.
MWI is an interpretation of quantum mechanics, ergo is applicable to all of the theories mentioned before. You can have MWI in classical, semi-classical, etc.
Meaning that it is a rebuttal, although how much good depends on how much credit you give to a theory that predicts different cosmological constants.
But MWI allows for different constants without predicting them, right? It would be a mistake to say that the case and evidence for MWI is evidence for a different-constants system, which itself has much less (almost no?) evidence for it, making this line of reasoning a very weak rebuttal?
Am I getting this right?