this post was submitted on 21 Dec 2025
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That this doesn't happen is proof that we never invent time travel.
I like the idea that time machines can only transport people within the time machines own timeline. You can go back in time and see yourself finish the time machine but you can't go back one second before that.
Like it's one end of wormhole that gets anchored at a particular point in time and the other end drifts forward through time, you can enter and exit the wormhole at any point in its worldline but only within that limit
It's still allows for time travel, and explains why no one has ever met a time traveller.
The concept of timelines (or that each decision creates a new dimension) ignores almost all of the fundamental laws of physics.
Woldlines are a part of physics. Look up light cones.