Acausal communication between isolated universes through simulation
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Published on December 24, 2025 11:46 AM GMT

It’s possible to imagine two separate sub-universes, causally isolated from one another, each containing a complex, conscious, intelligent creature whose mind consists of interacting spinor fields and potentials, as well as another, computationally simpler creature interacting with it.  

For the purpose of this thought experiment, it’s helpful to assume that physics is fundamentally continuous within these universes, and that, given the continuity of their physical substrate, these creatures operate as analogue computers.

Suppose that there exist theorems which say that the more complex minds will always output the same information as the simpler ones, all else (including their inputs, which is to say there sense-data…

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