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Old September 18, 2017, 12:28   #2
Therem Harth
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This seems really hard to prove, seeing as essentially all experimental science is based on forward causality.

Edit: I would swear I've heard of this before as "advanced photons" that effectively travel backwards in time, but searching is turning up no relevant results, and "time" isn't supposed to matter for individual photons anyway because relativity. IDK.

Last edited by Therem Harth; September 18, 2017 at 12:33.
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