this post was submitted on 10 Oct 2025
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The real question isn't if the universe ends...
It's if the genie magic expands outward from the source at the speed of light, or if it's instantaneous everywhere, which would allow information to be transmitted faster than the speed of light, allowing for violations of causality, and destroying our fundamental understanding of the universe before we all died.
This assumes the genie doesn't have access to some weird higher-reality or higher-"dimensional" power. For instance, if the universe is a simulation, then perhaps the genie has access to a console.
And you don't call discovering that the universe is a simulation "destroying our fundamental understanding of the universe"?
Yes and no. Nothing that we know about the universe preclude it being a simulation, so learning only that it is a simulation is more expanding out fundamental understanding of the universe. However, as things stand, we are pretty damn convinced that nothing violates causality while following the internal rules of the universe, so if the genie did that without invoking some power we might call "outside the universe", then we learn that the universe can internally violate causality - THAT might destroy our fundamental understanding of the universe.
real question, is there a difference?
In theory yes, but for any observer, it won't matter and it's all the same to them, as they cannot observe any difference in either case.
Not if the universe is inside the genie.
It's genies all the way down.
It's really, really, really, really, really, really, really, really fun to think about taking a speed of light ride.
You wouldn’t have any time to appreciate it.
Well, it's not a bowl.
No. It's inside you. For listening to the genie.
The genie didn't do anything. It was you the whole time!
The fermion number conservation would be violated anyways.