A connection between the simulated universe&#x27;s speed of light and its host CPU&#x27;s clock speed would imply <i>real-time</i> simulation. I see no reason why that would necessarily be the case for a simulated universe; most research-grade physics simulations humans run today aren&#x27;t real-time. (They would be real-time or faster if we had the hardware to run them that way — I imagine a sufficiently accurate physics &quot;REPL&quot; would help a researcher tremendously — but we make do without them.)