“ This has nothing to do with quantum theory. It's from classical physics already, from chaotic systems”
Not exactly. What’s important here is that every past is real. In the sense that different paths a particle can take can interfere with each other. It’s not indeterminate in a some fuzzy intuitive sense of “something we don’t know.” every past that matches the current known state of a system is real. That’s something that is included in the package of “quantum weirdness.”
And, if you make the assumption that every future is real in the same way, that’s the many worlds/decoherence interpretation.
Not exactly. What’s important here is that every past is real. In the sense that different paths a particle can take can interfere with each other. It’s not indeterminate in a some fuzzy intuitive sense of “something we don’t know.” every past that matches the current known state of a system is real. That’s something that is included in the package of “quantum weirdness.”
And, if you make the assumption that every future is real in the same way, that’s the many worlds/decoherence interpretation.