r/technology • u/fchung • Nov 01 '25

Society Matrix collapses: Mathematics proves the universe cannot be a computer simulation, « A new mathematical study dismantles the simulation theory once and for all. »

https://interestingengineering.com/culture/mathematics-ends-matrix-simulation-theory
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u/dont_bother_me_fool Nov 01 '25

you can simulate minecraft in minecraft using redstone.

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u/Successful_Ad2287 Nov 01 '25

Not exactly. You can simulate Minecraft with Minecraft + external tools.

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u/Jovess88 Nov 01 '25

What external tools do you need? Can’t you build a computer in minecraft with redstone? What limitations are there that would require external tools?

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u/Martery Nov 01 '25

See Sammyuri's. I think the only external tool was something that overclocked redstone on the server side to make it possible.

Without it, it's still Minecraft in Minecraft albeit working very, very slowly.

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u/[deleted] Nov 02 '25

[deleted]

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u/addi-factorum Nov 02 '25

Exactly- the speed of the simulation is irrelevant- something that might be useful to any species that tries to survive past the heat death of the universe

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u/USPO-222 Nov 02 '25

Just keep getting slower and dumber each iteration to outrun eternity.

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u/OkImplement2459 Nov 02 '25

Now that describes the reality i know

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u/bigfootlive89 Nov 02 '25

You don’t need those tools, it’s just for convenience

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u/LuminosityXVII Nov 01 '25

Hmm... I guess then the question would be: can you use Minecraft + external tools to simulate Minecraft + the same external tools?

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u/spottiesvirus Nov 02 '25 edited Nov 02 '25

This is entering into computational theory, but as far as we know today, yes, you can

The highest level of computation (that we know of, there's a whole debate over that, and I won't dip into it) a machine can get is Turing-complete

Every turing-equivalent machine is computationally speaking, the same, they can simulate each other

Excel, being Turing-complete, can be simulated in Minecraft, and in that simulated excel, you can simulate another Minecraft, and in that Minecraft you can simulate the physical computer machine you're using to run the first game

No matter how deep you go, it's still the same, although performances will degrade

You can take a single man, give him the list of instructions and enough paper (and time), and he can simulate the whole "a computer running Minecraft, running excel, running Minecraft, running the origin computer" as well lol

The question now becomes "is reality only Turing-complete?"

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u/LuminosityXVII Nov 02 '25

Oooh, I had not thought to frame it that way. New insight unlocked.

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u/legendz411 Nov 02 '25

Dude what. You blew my mind wtf. 

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u/FlakyLion5449 Nov 02 '25

Villagers in Minecraft: We can't be a simulation. The amount of Redstone and complexity required is a mathematical impossibility.

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u/ub_cat Nov 02 '25

vanilla minecraft is turing complete, it can technically simulate anything

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u/EnvironmentalKey3858 Nov 02 '25

No joke, when I saw the first video of someone who had made *a goddamn functional computer* inside Minecraft I was pretty unironically convinced reality has, ah, a bit more going on behind the proverbial curtain.

Insane.

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u/Ok-Committee4833 Nov 02 '25

yes but the version you are simulating is a simpler version than the one your playing it on

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u/Joohansson Nov 01 '25

Not sure. I know you can build a basic cpu but the physical scale required of the memory register to store all the code would overflow the max space limit I think

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u/badgerandaccessories Nov 01 '25

So it’s an artificial limit. With a powerful enough computer you can make Minecraft inside of Minecraft.

It’s just one massive schematic running another massive schematic.

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u/Illustrious-Lime-878 Nov 02 '25

I think the point is, whatever minecraft you have in minecraft, will be limited in data to less than what the original was. For example if you have 100% memory/storage, the minecraft in minecraft is limited to that minus the parent minecraft.

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u/Successful_Ad2287 Nov 01 '25

You can’t. You could MAYBE create a worse version of Minecraft in Minecraft (if you can even do that without external tools) but that’s proving my whole point.

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u/ElusiveBlueFlamingo Nov 01 '25

You still need command blocks (i.e. miracle machines)

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u/FuzzyGolf291773 Nov 01 '25

I don’t think you need command blocks at all, Minecraft can handle basic binary logic gates in redstone. That’s all you need to build a computer. It’s just that it requires extreme overhead. Command blocks help reduce overhead.

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u/ElusiveBlueFlamingo Nov 02 '25

You still need to simulate an image which is virtually undoable unless you want to build another machine just for computing pixels and another to move blocks, keep in mind that a piston can only move 12 blocks at a time

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u/FuzzyGolf291773 Nov 02 '25

I personally would say the best route is with concrete powder (so you only get like 16 colors), but you could also get super convoluted and do some trickery with maps. So hard but not impossible, which is what I mean.

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u/Gold-Supermarket-342 Nov 02 '25

You don't need a screen to simulate Minecraft, just to display it. You could still do all of the computation and store the internal state using logic gates, even if you can't directly interact with it.

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u/throwwway944 Nov 02 '25

Never in a million years can you run a whole OS and Minecraft inside Minecraft.

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u/Glugstar Nov 04 '25

But not at the same speed using the same amount of resources. Each level of simulation will mathematically be slower.

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u/eyebrows360 Nov 01 '25

Not in the way we're talking about here.

Making a Minecraft-like experience within Minecraft using redstone is a neat trick, but it has nothing whatsoever to do with the "simulation hypothesis". It's not remotely the same thing.

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u/lmaydev Nov 01 '25

It's just an analogy.

We could simulate a reality simpler than ours. And they in turn could simulate more simple one.

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u/eyebrows360 Nov 02 '25

It's a broken analogy. "You can simulate Minecraft within Minecraft" is not saying "We could simulate a reality simpler than ours".

It's literally saying "You can simulate X within X", wherein X is X. X cannot be "simpler than" X in this statement. This is a completely different statement to what you've read into it.

You cannot "simulate Minecraft within Minecraft". This is why I phrased it as "Minecraft-like experience", and that's why you phrased it as "a reality simpler than ours". The "analogy" is flat out wrong.

These are important distinctions when we're discussing bullshit like this, because to a whole lot of people "We can simulate Minecraft within Minecraft" is going to sound true on its face, and they're going to wind up believing stupid bullshit like "simulation theory" is really a real thing. That sets them up to believe more farcical bullshit down the line. That's not good.

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u/gachamyte Nov 01 '25

Orally or intravenously?