Can someone tell me what the current ACCEPTED theory of time entails? Is it merely the perception of movement, or does it concretely exist as space does? If it is merely the perception of movement, then time travel would only be possible if you could get the matter that you are made of to reverse its movement according to each particle’s world line. That would be impossible, as each particle that you are made of would have been involved in many other interactions only a short time before you came together.
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I know this has been raised many times before. A one-liner would suffice.
Danke