this post was submitted on 16 Feb 2026
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Science Memes

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[โ€“] YiddishMcSquidish@lemmy.today 10 points 1 day ago (1 children)

Is it though? There's the whole causality argument, where if time travel does get invented in the future, then you can only travel back to that moment

How would you know you've invented time travel then?

You're basically describing a real-time machine.