An argument that our universe is a giant causal loop:
https://www.vesselproject.io/god-in-the-loop

The argument goes somewhat like this:

Our universe, or any possible universe must be a causal loop. As such, any universe that is not a closed-timelike-curve (like a giant wormhole) will inevitably contain intelligence in order to maintain the loop by manipulating Von Neumann entropy, or quantum entropy. This matches what intelligent agents in our universe are already attempting through quantum computing, suggesting that we exist within a cycle of quantum simulations.

The article has the full details, but that's the gist of it.