I’ve already written a post on simulation theory, but I just answered the question again on Quora, and I’m going to post that here for the parts that are better than the other post, and also so that more people see my ideas on the matter, as it seems that most people who come across my blog only view the last few posts.
Someone on Quora asks, “Is it possible that our perception of reality isn’t real at all? Could our entire existence be nothing but a computer simulation from an advanced civilization?” here’s my answer.
No. This consideration is merely a product of the technologistic mindset of our zeitgeist, due to the widespread proliferation and use of computers and technology in general. It’s better to just go out and “touch grass” and regard reality as being exactly as real as it seems to be (and thus also being potentially endlessly deep and nuanced, extending all the way down to the ineffable), and thus to maintain a worldview that’s fully rich, wholesome, open-ended, potentially magical, and true to the heart.
The view supposes that endless technological development of more and more complex systems is the norm for intelligent civilizations, but I think this view is in error. It’s just a projection from our own current industrial fever dream. Intelligent species probably realize eventually that technology—at least highly complex, ubiquitous/immersive, and whatever-the-opposite-of-holistic-and-organic-is technology—takes away more from our wellbeing than it gives. It’s beneficial in specific, overt, and immediate ways, while being much more deleterious in more subtle, long-term ways, so it’s a big trap.
People aren’t happier now than they were 50,000 years ago. In fact, most people are more often unhappy than they are happy, and depression in society is rampant, its frequency only increasing. Technology separates us from nature; hence it separates us from life, thus making us unfulfilled and therefore constantly, anxiously looking to fill the spiritual void with whatever superficial pleasures we can.
A Native American chief once remarked that the whites seemed mad, like they were constantly looking for something they didn’t currently have. And in those days, people were defecting to Native American culture in such large numbers that it became a problem for white society. Anyone who spent some time in Native American culture never wanted to go back to their previous way of life.
So, this technological frenzy of ours is probably, hopefully, just temporary, like a relatively long-running fad, and it probably isn’t the norm for alien civilizations, even/especially the more advanced/older ones. The Kardashev scale is pure fiction, the invention of a highly pathological mindset.
Another problem with simulation theory is that it violates Occam’s razor. The computer that simulates our universe would have to exist in a much larger universe, in order for the computer to be big enough to store and run our entire universe, so that’s introducing a massive number of assumed entities (or one huge assumed entity, depending on how you look at it) that there’s no evidence for and hence no need for it to be included in our model/explanation of the world.
Another problem with simulation theory is that a computer simulation couldn’t possibly give rise to consciousness. There are various arguments I could make for this, but I’ll just include this one, a thought experiment for the purpose of reductio ad absurdum:
1. Take each individual calculation/opcode execution and separate them across a long span of time. Is the resulting “system” conscious?
2. Remove the computation element and just have a sequence of register and/or memory states. Is the resultant information conscious? What part actually matters?
3. Take the register and/or memory states, and maybe even the internal CPU/GPU states composing each individual computation, and encode them in etchings on a marble wall. Is the resulting state of affairs conscious?
4. Instead of etching the encodings into marble, encode them into patterns of water droplets in random places spread over many clouds. Is the resulting data conscious?
5. Just interpret whatever informational patterns that already exist in the water droplets spread over many clouds as the information contained in an AI according to whatever ad hoc encoding is necessary to do that, since the particular method of encoding is arbitrary anyway… are the clouds conscious?
(Maybe the clouds are conscious, but probably not for the reason that they can be arbitrarily interpreted as encoding the digital information of an AI…)
I make more arguments in this essay: On the Possibility of Artificial General Intelligence
And even if a simulation could give rise to consciousness, what’s there to limit any consciousness/mind it creates to one particular character/body in the simulation, which actually has no physical separation in the simulation, only a highly abstract, conceptual one, its actual constituent events being distributed and interspersed in space and time widely across the system? It makes no sense. If any consciousness could come out of it (which is already an absurd proposition), it makes more sense that it would be one consciousness/mind that encompasses the whole system, so you wouldn’t have the experience of being an individual in a single body that you have now.
I’ve already written an essay linked to below about this question, but it probably doesn’t say anything I didn’t say here: No, We’re Not Living In a Simulation
