4 ms·
All the objective classical facts out there (e.g., the location of the moon, the existence of the dinosaurs, what I ate for breakfast) are recorded in many degr
by jessriedel 2y ago
All the objective classical facts out there (e.g., the location of the moon, the existence of the dinosaurs, what I ate for breakfast) are recorded in many degrees of freedom (e.g., the photons scattered off the moon, the dinosaur bones, and the microscopic bits of bagel in the trash). By the no-cloning theorem, quantum information cannot be amplified, so this necessarily means the information we can access is classical. But these classical facts are the exception rather than the rule, as far as the full arena of quantum mechanics is concerned. There are always many more degrees of freedom that are not redundantly recorded, for the simple fact that you need to use one degrees of freedom to record another.
Even if the world were fundamentally classical (which it's not), the only things you could actually know about it would be the tiny subset that is amplified to macroscopic scales, necessarily producing many records in, if nothing else, the many atoms in the neurons in your brain.