There is a recent article in Erkenntnis that discusses termination risks related to the simulation hypothesis [1]. That is, if we are living in a computer simulation, are there risks that might suddenly cause the simulation to end? The author proposes that there are risks:

The problem with this reasoning is that any computation performed in a simulation must ultimately be supported by computation on the basement level. The computing constraints and the objectives of the simulators on the basement level, therefore, put a limit on the amount of nesting that can occur.8 It is partly for this reason that ancestor simulations entail a termination risk to those that create them. A similar risk is mentioned by Bostrom (2003b, 253), who writes:

One consideration that counts against the multi-level hypothesis is that the computational cost for the basement-level simulators would be very great. Simulating even a single posthuman civilization might be prohibitively expensive. If so, then we should expect our simulation to be terminated when we are about to become posthuman.

I don't understand how a simulation is limited on the nesting that can occur, and therefore the conclusion that there is a termination risk does not follow.

For instance, my thought is that if the universe is already "exactly" simulated ("outside" of our time), then re-arranging components (building a computer, etc) inside the simulation to create a sub-simulation doesn't change anything in terms of resources used.

Question: How is it possible that there is a limit on the amount of nesting that can occur inside the simulation (the simulation of "the simulation hypothesis")?

[1] Greene, Preston. "The Termination Risks of Simulation Science." Erkenntnis, online https://link.springer.com/article/10.1007/s10670-018-0037-1

  • 1
    I think that the risks of "terminating" the world due to pollution, clmate changes, nuclear war are much higher than the risk due to a possible "limit on the amount of nesting". – Mauro ALLEGRANZA Nov 28 '18 at 16:26
  • We're all characters in a video game in an alien bar, and the players just ran out of quarters. – user4894 Nov 28 '18 at 17:25
  • The outer simulation in which we exist slows as complexity increases. We don't notice that because a second in here is still a second.. but at some point the outer simulation must begin to grind.. At that point either some paring needs to be done (maybe have everyone sleep longer etc.) Or shut down as it's no longer productive. – Richard Nov 29 '18 at 1:06

For instance, my thought is that if the universe is already "exactly" simulated

Not all simulation hypotheses consist of exact simulations. Many posit that the simulations is limited to only enough of the universe for the simulation to appear complete to the inhabitants of the simulation. So, for instance, if we are in a simulation, perhaps other galaxies are not simulated down to individual stars. If we were to create a posthuman civilization that colonizes other galaxies, then perhaps the simulation would then have to simulate individuals stars in other galaxies, requiring vastly more computing power.

Your Answer

By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

Not the answer you're looking for? Browse other questions tagged or ask your own question.