Simulation is a very rich world, although less often discussed in the context of science, technology, engineering, and math than in the world of gaming. In this post I’ll talk about simulation and how it relates to Neoclassical Physics and Quantum Gravity (𝗡𝗣𝗤𝗚). What new modes of simulation may be possible? Could we be in a simulation?
Simulation is, and has been, a powerful tool employed by research and development. A real system is modeled at the necessary level of detail for the application and a computational system implements the model with appropriate inputs, feedback, and tunables so as to simulate the real system. Value is extracted from the outputs of the simulation. Simulations can run in a variety of environments including cloud, supercomputer, and parallel systems, and they may use specialized codes, algorithms, and deep learning neural networks. Scientists may use any or all of these methods of simulation, including running lesser scale trials on their laptop.
Key system level simulation tradeoffs include scale, accuracy, precision, and simulation rate. The simulation rate is key to understanding economic value vs. response time based vs. enabled applications. What scale simulation? How fast can that simulation run? Can it run in real-time or even better? Can it run in sub-real-time, thus enabling control feedback?
The Neoclassical Physics and Quantum Gravity (𝗡𝗣𝗤𝗚) Universe is classically mechanical, which is natural, but it is also makes for a surprisingly simulatable universe. With the computational software and hardware available, and the amount of physical redundancy and repeatability we observe in nature, it is feasible to simulate portions of the universe.
IS OUR UNIVERSE A SIMULATION?
At a universe scale, my predilection and preference is towards non-simulation, of course, i.e., reality, but I must strive to be unbiased. It’s easy to imagine that a simulation with X electrino/positrino pairs, and Y energy scattered inside a 3D void space, with physics clock rate set to Z, could evolve like our universe. It’s that simple, three parameters, some distribution of ingredients, and the laws of physics inherent in the particles & energy. Then let the clock run and see what happens. This is a passive form of simulation. You would still have free will, which we will discuss later. You can imagine a simulation that starts like a passive simulation, but where the Operator “Op” is occasionally making an adjustment here or there. Tweaking the experiment. That might not be so good, like Op could aim something massive or energetic our way.
Reddit uses “Op” as an acronym for ‘original poster,’ the one who initiated the dialog or thread. Perhaps we should pronounce Op for operator as Opie for old times sake. New age Opie can take its place with Siri and Alexa. If we are in a simulation, I sure would rather the operator be called Opie than just about anything else. Wasn’t there a Star Trek episode like this, where some authoritarian leader was just a child? Except on Star Trek it was a misbehaved child. Whereas Opie is cool. Opie generally tries to do the good and right thing. Opie gets it wrong from time to time, just like everyone else. But Opie gets back on the good path, learning the lesson.J Mark Morris July 2019
When you consider scale and that we are able to do science over 60 orders of magnitude, well, it’s frankly not that hard to imagine that the orders of magnitude may continue far beyond or far below the ones we can detect. It seems far fetched until you remind yourself we already do science over 60 orders of magnitude, arguably 20 of which we have control or influence. For any physics knowledgeable readers, Planck scale does seem limiting if we are not in a simulation.
A good measure of scientific progress would be one that is based on which orders of magnitude we can influence and to what degree we can control them.J Mark Morris July 9, 2019
NON-DETERMINISM AND FREE WILL
If we are NOT in a simulation, then some events are non-deterministic and we have free will. Every quantized energy transfer from particle to particle is a reaction that proceeded. Mass-energy waves are not so much transactions as they are fluctuations of continuous energy (temperature) between (condensed) standard matter and the superfluid. Therefore temperature is both quantized and continuous.
We know that reactions have energy thresholds or barriers. If the energy is below the threshold the reaction won’t proceed. If the energy is equal to the threshold, it may or may not proceed, and if the energy is greater than the threshold, the reaction will proceed.
Now, why are reactions non-deterministic? The reason is that there is no way to control background energy waves through the superfluid nor condensed particles that may appear at the moment of any transaction. It could be that a transaction is just a smidgen below the reaction threshold and at just that moment a gravity wave from an approaching celestial object with just enough energy, coincides and pushes the reaction over the top.
Now we have established non-determinism.
As for free will, I will appeal that the logic of any decision could be tipped by the aforementioned gravity wave or arriving particle. It is really only when we are truly on the fence, that we let nature tip us one way or the other. Ponder that thought.J Mark Morris July 2019
Aside: Earlier in this post, I spoke about the concept of a physics clock rate for the Universe. I haven’t seen that concept in my readings, so maybe it is a new idea. What I am thinking is that if the Universe is a simulation, that Opie may be able to adjust the base rate of time.
J Mark Morris
San Diego July 9, 2019 v1