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  4. How close are we from building a virtual universe?
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How close are we from building a virtual universe?

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Re: How close are we from building a virtual universe?
« Reply #260 on: 31/08/2021 06:57:54 »
Quote from: Curious Cat on 30/08/2021 15:35:42
I/have wasted my life/time trying to explain all those paradoxes away, classically,
only to realise in my old age/the end that it can't be done.
Prior to Newton, movement of planets were impossible to explain naturally. Even Newton thought that electromagnetic phenomena were too mysterious.

Whenever we get unexpected result, there must be at least one false assumption that we've made, either explicitly or implicitly. We just need to identify all the assumptions that we've employed to get our expectations, and then identify which of them are not necessarily true.
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Re: How close are we from building a virtual universe?
« Reply #261 on: 31/08/2021 07:00:32 »
"A quantum experiment suggests there’s no such thing as objective reality | MIT Technology Review" https://www.technologyreview.com/2019/03/12/136684/a-quantum-experiment-suggests-theres-no-such-thing-as-objective-reality
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Physicists have long suspected that quantum mechanics allows two observers to experience different, conflicting realities. Now they’ve performed the first experiment that proves it.

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The idea that observers can ultimately reconcile their measurements of some kind of fundamental reality is based on several assumptions. The first is that universal facts actually exist and that observers can agree on them.

But there are other assumptions too. One is that observers have the freedom to make whatever observations they want. And another is that the choices one observer makes do not influence the choices other observers make—an assumption that physicists call locality.

If there is an objective reality that everyone can agree on, then these assumptions all hold.

But Proietti and co’s result suggests that objective reality does not exist. In other words, the experiment suggests that one or more of the assumptions—the idea that there is a reality we can agree on, the idea that we have freedom of choice, or the idea of locality—must be wrong.

Of course, there is another way out for those hanging on to the conventional view of reality. This is that there is some other loophole that the experimenters have overlooked. Indeed, physicists have tried to close loopholes in similar experiments for years, although they concede that it may never be possible to close them all.
Nevertheless, the work has important implications for the work of scientists. “The scientific method relies on facts, established through repeated measurements and agreed upon universally, independently of who observed them,” say Proietti and co. And yet in the same paper, they undermine this idea, perhaps fatally.


Claiming that there's no objective reality is extraordinary, hence requires extraordinary evidence. But we keep seeing this kind of researches from time to time. Perhaps that's what it takes to get more attention.
Before they put the blame on the existence of objective reality, perhaps they should scrutinize their experimental setups and theoretical model that they used to explain the situation.
« Last Edit: 31/08/2021 07:20:54 by hamdani yusuf »
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Re: How close are we from building a virtual universe?
« Reply #262 on: 02/09/2021 05:27:19 »
Quote from: Curious Cat on 31/08/2021 11:45:58
U may care to see (The Incredible) Halc's outstanding Best Answer to my Mach-Zehnder interferometer question,
and our no holds barred wrestling contest/match afterward/s. TIH vs TCC! I think I gave just as good as I got.


I've had a plan to make Mach-Zehnder interferometer using microwave for a while now, but it's kept pushed aside by other things. I'm curious of what would happen if the type of beam splitters are changed, e.g. replaced by polarizers.

I've already recorded some other experiments using radio, microwave, and laser. I just haven't had time to edit and upload all of the videos.

I'm affraid I'll just get even busier ahead, since I've got freelance side jobs to design the instrumentation and automation control system for production process plants. That's the kind of problem that prompted me to create this thread.
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Re: How close are we from building a virtual universe?
« Reply #263 on: 02/09/2021 06:55:40 »
Tesla's AI day reveals many things which show how close we are from building a virtual universe.

Tesla Transformers! Why is Vector Space so critical to FSD?


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During Tesla's AI day, Andrej Karpathy, director of AI and autopilot vision at Tesla, went into a great deal of detail about how and why Tesla engineers have expended massive effort to transform video images from Tesla cameras into abstracted vector spaces. The way they achieved this, and the results, are astounding. From Hydranets to Transformers, to conversion to vector space, Karpathy explained how Tesla vision full self driving takes images from the cameras and converts them to a depth sorted 2D top down map of the surroundings--all in real time!
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Re: How close are we from building a virtual universe?
« Reply #264 on: 02/09/2021 10:27:52 »
Your Tesla can plan ahead! Does that mean it's conscious?


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During Tesla AI day on August 19th, Ashok Elluswamy, Tesla’s director of autopilot software, demonstrated that Teslas driving the FSD (Full Self Driving) beta 9 have an almost eerie ability to plan ahead for issues that might arise while driving. Some of this comes down to basic physics--knowing how heavy and how big your "ego" car is--but a lot of you Telsa's ability to plan comes down to the car route planning... for all the other agents in the scene (other cars, pedestrians, bikes, etc). This is crazy--and it got me thinking about a book by Christopher McDougall, Born to Run, which posits that human consciousness arose on the plains of Africa as early humanoids had to place an agent model (a version of their own brains) into that of their hunting companions and the target prey.
But wait, you say, this is just what a Tesla is doing when it route plans. Might your Tesla actually be conscious?!

We are going to see machines with self awareness, and capability to understand the behavior of other conscious agents. They can also choose appropriate instrumental goals to help achieving their terminal goals.
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Re: How close are we from building a virtual universe?
« Reply #265 on: 02/09/2021 13:10:38 »
On presentation or user interface front, we've got this.


Now Games Can Look Like Pixar Movies - Unreal Engine 5
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Re: How close are we from building a virtual universe?
« Reply #266 on: 12/09/2021 02:01:12 »
Virtual universe in the large scale.
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Forget about online games that promise you a "whole world" to explore. An international team of researchers has generated an entire virtual universe, and made it freely available on the cloud to everyone.

Uchuu (meaning "outer space" in Japanese) is the largest and most realistic simulation of the universe to date. The Uchuu simulation consists of 2.1 trillion particles in a computational cube an unprecedented 9.63 billion light-years to a side. For comparison, that's about three-quarters the distance between Earth and the most distant observed galaxies. Uchuu reveals the evolution of the universe on a level of both size and detail inconceivable until now.


https://phys.org/news/2021-09-largest-virtual-universe-free-explore.html
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Re: How close are we from building a virtual universe?
« Reply #267 on: 12/09/2021 06:16:49 »
And here's the virtual universe closer to our everyday lives. The author is good at explaining technical concepts to lay persons.
How does Tesla manage to label ALL THAT DATA? And why does it even matter?? AI Day Part 6
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On August 19th, during Tesla AI day, Andrej Karpathy, director of artificial intelligence and autopilot vision, dove into a topic that is distinctly not sexy, but absolutely necessary for modern machine learning: collecting and especially labeling data for training.
After covering how Tesla Vision converts 2D images into 3D vector space, and discussing how the cars can plan ahead not just for them, but for all other agents in the scene (you can watch my previous videos, linked above, for much more on this), Dr. Karpathy broached the topic of how Tesla deals with the mountains of data it’s 2 million car strong fleet produces now.
And while I thought I’d be bored by this section of the talk, I was, frankly, blown away by how brilliant Tesla’s data labeling strategy is, and also how much time, person power, and money Tesla has and is putting into labelling the best, most targeted data possible. Along with the incredible neural network architecture, this data labeling is what is enabling Tesla to achieve what seemed impossible just a short time ago: full autonomous driving using only cameras!
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Re: How close are we from building a virtual universe?
« Reply #268 on: 14/09/2021 05:07:22 »
OpenAI Codex: Just Say What You Want!

The paper "Evaluating Large Language Models Trained on Code" is available here:
https://openai.com/blog/openai-codex/

When we got technicality out of our way, we can be more focused on determining and achieving our terminal goal.
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Re: How close are we from building a virtual universe?
« Reply #269 on: 14/09/2021 05:29:25 »
https://towardsdatascience.com/gpt-4-will-have-100-trillion-parameters-500x-the-size-of-gpt-3-582b98d82253
Are there any limits to large neural networks?
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OpenAI was born to tackle the challenge of achieving artificial general intelligence (AGI) — an AI capable of doing anything a human can do.
Such a technology would change the world as we know it. It could benefit us all if used adequately but could become the most devastating weapon in the wrong hands. That’s why OpenAI took over this quest. To ensure it’d benefit everyone evenly: “Our goal is to advance digital intelligence in the way that is most likely to benefit humanity as a whole.”
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The holy trinity — Algorithms, data, and computers
OpenAI believes in the scaling hypothesis. Given a scalable algorithm, the transformer in this case — the basic architecture behind the GPT family —, there could be a straightforward path to AGI that consists of training increasingly larger models based on this algorithm.
But large models are just one piece of the AGI puzzle. Training them requires large datasets and large amounts of computing power.
Data stopped being a bottleneck when the machine learning community started to unveil the potential of unsupervised learning. That, together with generative language models, and few-shot task transfer, solved the “large datasets” problem for OpenAI.
They only needed huge computational resources to train and deploy their models and they’d be good to go. That’s why they partnered with Microsoft in 2019. They licensed the big tech company so they could use some of OpenAI’s models commercially in exchange for access to its cloud computing infrastructure and the powerful GPUs they needed.
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What can we expect from GPT-4?
100 trillion parameters is a lot. To understand just how big that number is, let’s compare it with our brain. The brain has around 80–100 billion neurons (GPT-3’s order of magnitude) and around 100 trillion synapses.
GPT-4 will have as many parameters as the brain has synapses.
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OpenAI has been working nonstop in exploiting GPT-3’s hidden abilities. DALL·E was a special case of GPT-3, very much like Codex. But they aren’t absolute improvements, more like particular cases. GPT-4 promises more. It promises the depth of specialist systems like DALL·E (text-images) and Codex (coding) combined with the width of generalist systems like GPT-3 (general language).
And what about other human-like features, like reasoning or common sense? In that regard, Sam Altman says they’re not sure but he remains “optimistic.”
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Re: How close are we from building a virtual universe?
« Reply #270 on: 15/09/2021 13:27:51 »
Quote from: Curious Cat on 15/09/2021 11:42:30
G'duy, neighbour. I'm from Oz/tralia. The fabled land of Oz.
Thank U for Ur MZI replies. U look to me like an electrical engineer, type.
Both Ur names are Islamic. I assume U're a good Muslim/believer.
Didn't U ever wonder how something like that can be implemented? Only in SW.
Good day, my neighbor.
My current work is more about plant control, automation and instrumentation, although I also have experience in leading in house utility plant in my site, as well as electrical maintenance team.
As you can see in my signature, unexpected results come from false assumptions. Perhaps you can check my other threads about philosophy and morality.
Something like that can also happen in real life.
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Re: How close are we from building a virtual universe?
« Reply #271 on: 15/09/2021 13:30:31 »
Here is another take on Tesla's AI day. It shows how close we are from building a virtual universe.

Watch Tesla’s Self-Driving Car Learn In a Simulation!
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Re: How close are we from building a virtual universe?
« Reply #272 on: 15/09/2021 13:33:15 »
Quote from: Curious Cat on 15/09/2021 11:42:30
"There is no classical explanation, so the universe is a simulation".
The classical explanation is not a single thing/version. I learned from the history of scientific progress. There might be a version which can give satisfactory answers.
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Re: How close are we from building a virtual universe?
« Reply #273 on: 15/09/2021 17:43:48 »
Quote from: Curious Cat on 15/09/2021 15:47:23
NO! There is/are no classical explanation/s, for quantum paradoxes/phenomena.
What's your definition of classical physics?
What makes quantum physics different than classical counterpart?
Do you know that physics theories evolve over time? For both classical as well as quantum theories?
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Re: How close are we from building a virtual universe?
« Reply #274 on: 15/09/2021 17:45:27 »
Quote from: Curious Cat on 15/09/2021 15:47:23
But/t there is an explanation and it's a SW based universe/cosmos.
The software must run on the hardware. How does the hardware work?
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Re: How close are we from building a virtual universe?
« Reply #275 on: 15/09/2021 18:38:41 »
People often say that Newtonian mechanics is classical physics. So is Maxwellian electromagnetic theory. But they are incompatible with each other.
Newtonian optics and Huygen's optics are both classical theories, but they are also incompatible with each other.
Based on its name, quantum physics are different from classical ones due to quantization of energy transfers. In contrast, classical physics don't recognize such quantification. Although initially, Planck introduced his constant merely as proportionality factor, which says that a unit of oscillator on black body needs more energy to produce radiation with higher frequency. Interpreting it as quantification of energy transfer came later, proposed by Einstein. Modern quantum theory is significantly different than earlier versions.
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Re: How close are we from building a virtual universe?
« Reply #276 on: 16/09/2021 03:02:24 »
I have no problem in accepting new theories. As long as it can explain observations better than the existing theory. I. e. it can explain more observations with less assumptions.

But if a theory forces us to abandon causality, I think it's time we need to look for some better alternatives. It's more likely that some errors have been made in deriving the theory, or interpreting the observation.

Consciousness works relying on the existence of causality. We make plans because we believe that our actions influence the results, not the other way around. And our own consciousness is the only unquestionable evidence of our own existence. 
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Re: How close are we from building a virtual universe?
« Reply #277 on: 16/09/2021 07:21:47 »
Quote from: hamdani yusuf on 14/09/2021 05:29:25
100 trillion parameters is a lot. To understand just how big that number is, let’s compare it with our brain. The brain has around 80–100 billion neurons (GPT-3’s order of magnitude) and around 100 trillion synapses.
GPT-4 will have as many parameters as the brain has synapses.

How Computationally Complex Is a Single Neuron?
Quote
Our mushy brains seem a far cry from the solid silicon chips in computer processors, but scientists have a long history of comparing the two. As Alan Turing put it in 1952: “We are not interested in the fact that the brain has the consistency of cold porridge.” In other words, the medium doesn’t matter, only the computational ability.

Today, the most powerful artificial intelligence systems employ a type of machine learning called deep learning. Their algorithms learn by processing massive amounts of data through hidden layers of interconnected nodes, referred to as deep neural networks. As their name suggests, deep neural networks were inspired by the real neural networks in the brain, with the nodes modeled after real neurons — or, at least, after what neuroscientists knew about neurons back in the 1950s, when an influential neuron model called the perceptron was born. Since then, our understanding of the computational complexity of single neurons has dramatically expanded, so biological neurons are known to be more complex than artificial ones. But by how much?

To find out, David Beniaguev, Idan Segev and Michael London, all at the Hebrew University of Jerusalem, trained an artificial deep neural network to mimic the computations of a simulated biological neuron. They showed that a deep neural network requires between five and eight layers of interconnected “neurons” to represent the complexity of one single biological neuron.
https://www.quantamagazine.org/how-computationally-complex-is-a-single-neuron-20210902
Quote
“We tried many, many architectures with many depths and many things, and mostly failed,” said London. The authors have shared their code to encourage other researchers to find a clever solution with fewer layers. But, given how difficult it was to find a deep neural network that could imitate the neuron with 99% accuracy, the authors are confident that their result does provide a meaningful comparison for further research. Lillicrap suggested it might offer a new way to relate image classification networks, which often require upward of 50 layers, to the brain. If each biological neuron is like a five-layer artificial neural network, then perhaps an image classification network with 50 layers is equivalent to 10 real neurons in a biological network.
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Re: How close are we from building a virtual universe?
« Reply #278 on: 17/09/2021 02:23:59 »
Quote from: hamdani yusuf on 15/09/2021 18:38:41
People often say that Newtonian mechanics is classical physics. So is Maxwellian electromagnetic theory. But they are incompatible with each other.
Classic means non-quantum, and not all non-quantum thoeries are compatible with each other. Under classical physics, objects exist even unmeasured. They have a defined state at all times even if it isn't known. The moon is there even when nobody is looking at it, so to speak. Cause comes before effect and information cannot travel faster than light (the latter not being true under Newtonian physics).
None of this is necessarily the case with quantum mechanics. The rules differ from one interpretation to the next, but the empirical measurements do not. If one is to implement a simulation, one must choose an interpretation to simulate. Without that, you'd be implementing a thing without any design.

I've not read most of this thread. It's quite long, but typical of such assertions, there is never an eye given to looking for problems with the proposal. Only positive evidence is presented. This is known as the selection bias fallacy.
Address the problems. Actively seek them, else the idea will be shot down effortlessly when other do.

Quote from: Curious Cat on 16/09/2021 14:25:11
Have U heard about the Quantum Eraser?
Either the photons (can) travel back in time or the universe is implemented in SW
This is incorrectly stated. No interpretation of QM suggest either. The choice is: Either there is reverse causality (effect before cause) or there is no state in the absence of measurement. The quantum eraser experiments are actually really hard evidence against a simulation.
Most simulations work by remembering the state of everything and then computing some future state at some small increment of time. This means choosing a quantum interpretation that has actual state, but such interpretations only work with reverse causality, meaning that you might have simulated the last billion years of physics, but some decision made just now has changed what happened a billion years ago, invalidating everything that has happened since (and yes, they've done experiments that apparently reach at least that far back). The simulation could never make forward progress.

Alternatively one could simulate a local interpretation of quantum mechanics, none of which require reverse causality like that. But the problem is you sacrifice state. If there's no current state, how can the next one be computed?
I cannot think of an algorithm that would simulate either kind of interpretation, and it has been proven that there cannot be one that has both real state and also locality. That means that no classic algorithm can implement quantum mechanics at all, and thus any simulation would have to be at a classic level, which sounds intuitively plausible until one recognizes how much quantum effects effect just about everything we see every day. Without that, rainbows, electronics and nerve cells cannot work. The simulation would need to glean the purpose of every effect and change the physics accordingly.
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Re: How close are we from building a virtual universe?
« Reply #279 on: 17/09/2021 09:40:19 »
Quote from: Halc on 17/09/2021 02:23:59
Most simulations work by remembering the state of everything and then computing some future state at some small increment of time. This means choosing a quantum interpretation that has actual state, but such interpretations only work with reverse causality, meaning that you might have simulated the last billion years of physics, but some decision made just now has changed what happened a billion years ago, invalidating everything that has happened since (and yes, they've done experiments that apparently reach at least that far back).
Simulations can usually also work backward. Based on current states, previous states can be calculated, just like next states. That's the basis for Laplace's demon.

Which experiment are you referring to?
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