The Size of the Observable Universe, and the Planck length
These two artificial bounds would appear to be compelling evidence that "our" Universe is limited in size and complexity (granularity), to enable it to be easily modelled from outside.
If you are going to design a simulation, you first define the resolution (in this case the Planck length and time) and overall volume of the space (limit of the observable universe). The unusual thing, I suppose, is that we can observe both of these limits, despite being inside the simulation.
My son already works with Avagadro-number-sized simulations, they seem to be standard in Theoretical Physics, it seems a small step to scale up by a few hundred orders of magnitude.
If we didn't have quantum effects at the bottom, and the whole thing were continuous, and unbounded, THAT would be a difficult thing to simulate.
Biting the hand that feeds IT
