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Physics, Astronomy & Cosmology / Re: Is mass a number?
« on: 30/05/2022 03:00:09 »That is the principle of realism, and the only way it can be true is if one accepts superluminal causality. Physics isn't so classical as you'd like it to be.Well, sorry, but that doesn't say much about whether observers are needed so that "reality" exists.
It doesn't say much either, about measuring a real distance, or a real interval of time. These are both fundamental physical quantities, I challenge anyone to devise an experiment which doesn't measure both of these in some direct way.
Usually you don't need to learn about time or distance when you study physics, you assume, like everyone else, that they can be measured and that's sufficient.