Are we simulated?

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In 2016, Elon Musk stood on a stage and said the odds that we're living in "base reality" — the real, physical, un-simulated world — are one in billions. Not a joke, not a tweet. His actual stated position, on the record, twice.

He's not alone. An Oxford philosopher proved the logic in 2003. Neil deGrasse Tyson has given it 50/50. A Nobel physicist, a famous sci-fi author, and the man who wrote the book on consciousness all say some version of: you can't rule it out.

So let's do what this blog does. The argument, the quotes, the evidence for and against — then you run your own numbers and vote.

Quotes below are from public interviews, debates and papers, and sources are listed at the bottom.

1. The trilemma

In 2003, Oxford philosopher Nick Bostrom published "Are You Living in a Computer Simulation?" His argument is a trilemma: one of these three must be true. Tap each door.

2. Who said it

Tap a name. These are their words, shortened but not softened.

3. Weigh the evidence

Switch sides, then tap a claim to see how strong it really is. Backed means there's something real behind it. Thin means it's suggestive at best.

4. Run your own odds

Bostrom's math, simplified. If civilizations can build ancestor simulations, and some do, and they run a lot of them — then most minds like yours are simulated ones. Move the sliders, or try a preset.

5. My take

Here's where I've landed. Musk's Pong argument is the one I can't shake: forty years from two rectangles and a dot to photorealistic worlds with millions of players. Whatever the rate of progress from here, "indistinguishable from reality" is downstream of it — unless we wipe ourselves out first, which is Bostrom's whole point.

But Chalmers has the other half of it: you can't prove we're not in one, because any evidence could be simulated. An unfalsifiable idea is a fun idea, not a proven one. I put it where Tyson ended up: somewhere around a coin flip, and the coin is still in the air.

And honestly? If we are in a simulation, the programmer has a weird sense of humor — and I still have to pay rent. Base reality or not, the move is the same: build things.

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Sources

1. Nick Bostrom, "Are You Living in a Computer Simulation?", Philosophical Quarterly (2003): simulation-argument.com
2. Elon Musk at Recode's Code Conference (June 1, 2016), answering Joshua Topolsky: "the odds that we're in base reality is one in billions" — The Verge, Vox, IFLScience coverage
3. Elon Musk on The Joe Rogan Experience (Sept 2018): "if you assume any rate of improvement at all then games will be indistinguishable from reality, or civilization will end... Therefore, we are most likely in a simulation, because we exist" — ScienceAlert
4. Elon Musk on the Lex Fridman Podcast (2019): "What's outside the simulation?" — Inverse
5. 2016 Isaac Asimov Memorial Debate, "Is the Universe a Simulation?", American Museum of Natural History; Neil deGrasse Tyson: likelihood "may be very high"; Lisa Randall: effectively zero — Business Insider, AMNH
6. Neil deGrasse Tyson, later 50/50 framing of the argument — StarTalk / Diary of a CEO appearances
7. David Chalmers, Reality+ (2022): "You're not going to get proof that we're not in a simulation, because any evidence that we get could be simulated" — W.W. Norton
8. Philip K. Dick, "If You Find This World Bad, You Should See Some of the Others" (Metz, 1977)
9. Max Tegmark on the mathematical universe — 2016 Asimov debate coverage
10. James Gates on error-correcting codes in supersymmetry equations — reported in science press
11. Zohar Ringel & Dmitry Kovrizhin, "Quantized gravitational responses, the sign problem, and quantum complexity", Science Advances (2017)
12. Rizwan Virk, The Simulation Hypothesis (2019)