Re time travel in the paper, the proposed solution only seems to rule out positive superposition of the wave with itself. Does that apply to sending messages back in time to yourself or someone else who can then kill your dad before you were conceieved?[ Parent ]
Not sure if the article's findings actually apply to macroscopic signals at all.[ Parent ]
The only time it is allowed is in religious movies. Then, it's kinda expected.[ Parent ]
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