The more I learn about physics the more I am convinced this is a simulation.
In a way our universe is very lazy, at large scales where consciousness exists the universe is coherent, predictable.
The smaller you get the lazier and fuzzier the universe gets to save computational work. The actual state of things is only computed on small scales when you measure them. The speed of light puts limits on how far humanity can travel to extend the bounds of the simulation. Maybe the expansion of the universe is yet another hedge at limiting how far human can travel. Also, as things are red shifted due to expansion you can run the simulation of far away places slower due to time dilation.
The speed of light and the plank length are both hard codes to bound computational work. The plank length to bound computation getting too complex in the micro scale and the speed of light to limit computation in the macro scale.
It is also very convenient that the closer we look at things the more we see that under the hood things are discrete which is very convenient for simulating.
Maybe every level of the sim increases the plank length and decreases the speed of light in order to deal with inefficiency of doing a sim within a sim? Maybe at the final level of the sim we end up with the truman show.