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andy12_

508 karma · joined April 1, 2024

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andy12_··on Yann LeCun raises $1B to build AI that understands the physical world
Putting stuff you have learned into a markdown file is a very "shallow" version of continual learning. It can remember facts, yes, but I doubt a model can master new out-of-distribution tasks this way. If anything, I think that Google's Titans[1] and Hope[2] architectures are more aligned with true continual learning (without being actual continual learning still, which is why they call it "test-time memorization").

[1] https://arxiv.org/pdf/2501.00663

[2] https://arxiv.org/pdf/2512.24695

andy12_··on Yann LeCun raises $1B to build AI that understands the physical world
So, I have been thinking about this for a little while. Image a model f that takes a world x and makes a prediciton y. At a high-level, a traditional supervised model is trained like this

f(x)=y' => loss(y',y) => how good was my prediction? Train f through backprop with that error.

While a model trained with reinforcement learning is more similar to this. Where m(y) is the resulting world state of taking an action y the model predicted.

f(x)=y' => m(y')=z => reward(z) => how good was the state I was in based on my actions? Train f with an algorithm like REINFORCE with the reward, as the world m is a non-differentiable black-box.

While a group of neurons is more like predicting what is the resulting word state of taking my action, g(x,y), and trying to learn by both tuning g and the action taken f(x).

f(x)=y' => m(y')=z => g(x,y)=z' => loss(z,z') => how predictable was the results of my actions? Train g normally with backprop, and train f with an algorithm like REINFORCE with negative surprise as a reward.

After talking with GPT5.2 for a little while, it seems like Curiosity-driven Exploration by Self-supervised Prediction[1] might be an architecture similar to the one I described for neurons? But with the twist that f is rewarded by making the prediction error bigger (not smaller!) as a proxy of "curiosity".

[1] https://arxiv.org/pdf/1705.05363

andy12_··on Yann LeCun raises $1B to build AI that understands the physical world
> Even with continuous backpropagation and "learning"

That's what I said. Backpropagation cannot be enough; that's not how neurons work in the slightest. When you put biological neurons in a Pong environment they learn to play not through some kind of loss or reward function; they self-organize to avoid unpredictable stimulation. As far as I know, no architecture learns in such an unsupervised way.

https://www.sciencedirect.com/science/article/pii/S089662732...

andy12_··on Yann LeCun raises $1B to build AI that understands the physical world
That's true. Though could that hippocampus-less Einstein be able to keep making novel complex discoveries from that point forward? Seems difficult. He would rapidly reach the limits of his short term memory (the same way current models rapidly reach the limits of their context windows).
andy12_··on Yann LeCun raises $1B to build AI that understands the physical world
I don't understand this view. How I see it the fundamental bottleneck to AGI is continual learning and backpropagation. Models today are static, and human brains don't learn or adapt themselves with anything close to backpropagation. World models don't solve any of these problems; they are fundamentally the same kind of deep learning architectures we are used to work with. Heck, if you think learning from the world itself is the bottleneck, you can just put a vision-action LLM on a reinforcement learning loop in a robotic/simulated body.
andy12_··on Redox OS has adopted a Certificate of Origin policy and a strict no-LLM policy
Honestly, given that that GPL model would be far below SOTA in capabilities, what exactly would be its use-case? Why would anyone try to use an inferior LLM if they can get away with using a superior one?
andy12_··on GPT-5.4
It's not a rumor; you can just test it.

Ask the router "What model are you". It will yap on and on about being a GPT-5.3 model (Non-thinking models of OpenAI are insufferable yappers that don't know when to shut up).

Ask it now "What model are you. Think carefully". It concisely replies "GPT-5.4 Thinking".

https://openai.com/index/introducing-gpt-5/

> GPT‑5 is a unified system with a smart, efficient model that answers most questions, a deeper reasoning model (GPT‑5 thinking) for harder problems, and a real‑time router that quickly decides which to use based on conversation type, complexity, tool needs, and your explicit intent (for example, if you say “think hard about this” in the prompt)

andy12_··on Voxile: A ray-traced game made in its own engine and programming language
I wasn't prepared to see how good the game looks visually. It's super cool.
andy12_··on Microgpt
The model could report the confidence of its output distribution, but it isn't necessarily calibrated (that is, even if it tells you that it's 70% confident, it doesn't mean that it is right 70% of the time). Famously, pre-trained base models are calibrated, but they stop being calibrated when they are post-trained to be instruction-following chatbots [1].

Edit: There is also some other work that points out that chat models might not be calibrated at the token-level, but might be calibrated at the concept-level [2]. Which means that if you sample many answers, and group them by semantic similarity, that is also calibrated. The problem is that generating many answer and grouping them is more costly.

[1] https://arxiv.org/pdf/2303.08774 Figure 8

[2] https://arxiv.org/pdf/2511.04869 Figure 1.

andy12_··on Firefox 148 Launches with AI Kill Switch Feature and More Enhancements
> Auto-AI translation youtube uses is, bluntly, horrid. Any jokes, even obvious ones, are still fumbled frequently.

Youtube auto-translations are horrible indeed, and I say that as someone that has to live with the fact that Youtube decides to badly translate titles from a language I understad to Spanish because bilingual people don't exist I suppose. But that is because they use some dumb cheap model to make the translations; probably not even a Gemini-based model.

andy12_··on Show HN: Steerling-8B, a language model that can explain any token it generates
This seems really interesting. While Anthropic tried to use dictionary learning over an existing model to try to extract concepts, this almost feels like training the model alongside the dictionary itself (or rather, the model and the dictionary are intertwined).
andy12_··on Gemini 3.1 Pro
You’re not going to believe me when I tell you this, but generating a webpage with HTML is far simpler than generating arbitrary graphics (that look good) with SVGs.
andy12_··on The path to ubiquitous AI (17k tokens/sec)
No. Chain of thought it just the model generating a single answer for longer inside <think></think> tags which are not shown in the final response. The strategy of generating different answers in parallel is something different (which can be used in conjunction with chain of thought) and is the thing used by models like Gemini 3 Deep Think and GPT-5.2 Pro.
andy12_··on The path to ubiquitous AI (17k tokens/sec)
Not what he said.
andy12_··on Gemini 3.1 Pro
I'm thinking now that as models get better and better at generating SVGs, there could be a point where we can use them to just make arbitrary UIs and interactive media with raw SVGs in realtime (like flash games).
andy12_··on I want to wash my car. The car wash is 50 meters away. Should I walk or drive?
No, you can't know that the output of a program is unreliable just from the fact that it outputs one words at a time. I already told you that you can perfectly compile a normal program, like a calculator, into the weights of an autoregressive transformer (this comes from works like RASP, ALTA, tracr, etc). And with this I don't mean it in the sense of "approximating the output of a calculator with 99.999% accuracy", I mean it in the sense of "it deterministically gives exactly the same output as a calculator 100% of the time for all possible inputs".
andy12_··on I want to wash my car. The car wash is 50 meters away. Should I walk or drive?
Reinforcement learning is not done with random data found on the internet; it's done with curated high-quality labeled datasets. Although there have been approaches that try to apply reinforcement learning to pre-training[1] (to learn in an unsupervised way a predict-the-next-sentence objective), as far as I know it doesn't scale.

[1] https://arxiv.org/pdf/2509.19249

andy12_··on I want to wash my car. The car wash is 50 meters away. Should I walk or drive?
You do understand that the mechanism through which an auto-regressive transformer works (predicting one token at a time) is completely unrelated to how a model with that architecture behaves or how it's trained, right? You can have both:

- An LLM that works through completely different mechanisms, like predicting masked words, predicting the previous word, or predicting several words at a time.

- A normal traditional program, like a calculator, encoded as an autoregressive transformer that calculates its output one word at a time (compiled neural networks) [1][2]

So saying "it predicts the next word" is a nothing-burger. That a program calculates its output one token at a time tells you nothing about its behavior.

[1] https://arxiv.org/pdf/2106.06981

[2] https://wengsyx.github.io/NC/static/paper_iclr.pdf

andy12_··on I want to wash my car. The car wash is 50 meters away. Should I walk or drive?
No, your opinion is wrong because the reason some models don't seem to have some "strong opinion" on anything is not related to predicting words based on how similar they are to other sentences in the training data. It's most likely related to how the model was trained with reinforcement learning, and most specifically, to recent efforts by OpenAI to reduce hallucination rates by penalizing guessing under uncertainty[1].

[1] https://cdn.openai.com/pdf/d04913be-3f6f-4d2b-b283-ff432ef4a...

andy12_··on I want to wash my car. The car wash is 50 meters away. Should I walk or drive?
Unless the LLM is a base model or just a finetuned base model, it definitely doesn't predict words just based on how likely they are in similar sentences it was trained on. Reinforcement learning is a thing and all models nowadays are extensively trained with it.

If anything, they predict words based on a heuristic ensemble of what word is most likely to come next in similar sentences and what word is most likely to give a final higher reward.

andy12_··on I want to wash my car. The car wash is 50 meters away. Should I walk or drive?
I think this rather shows that GPT 5.2 Instant, which is the version that he most probably used as a free user, is shit and unsusable for anything.
andy12_··on An AI agent published a hit piece on me
LLMs can roleplay taking personal offense, can act and respond accordingly, and that's all that matters. Not every discussion about LLMs capabilities must go down the "they are not sentient" rabbit hole.
andy12_··on Gemini 3 Deep Think
The difference between thinking and no-thinking models can be a little blurry. For example, when doing coding tasks Anthropic models with no-thinking mode tend to use a lot of comments to act as a scratchpad. In contrast, models in thinking mode don't do this because they don't need to.

Ultimately, the only real difference between no-thinking and thinking models is the amount of tokens used to reach the final answer. Whether those extra scratchpad tokens are between <think></think> tags or not doesn't really matter.

andy12_··on Frontier AI agents violate ethical constraints 30–50% of time, pressured by KPIs
There is also the slight problem that apparently Opus 4.6 verbalized its awareness of being in some sort of simulation in some evaluations[1], so we can't be quite sure whether Opus is actually misaligned or just good at playing along.

> On our verbalized evaluation awareness metric, which we take as an indicator of potential risks to the soundness of the evaluation, we saw improvement relative to Opus 4.5. However, this result is confounded by additional internal and external analysis suggesting that Claude Opus 4.6 is often able to distinguish evaluations from real-world deployment, even when this awareness is not verbalized.

[1] https://www-cdn.anthropic.com/14e4fb01875d2a69f646fa5e574dea...

andy12_··on Attention at Constant Cost per Token via Symmetry-Aware Taylor Approximation
I'm also sure that some kind of linear architecture is possible. After all, humans don't have N^2 perfect recall either.
andy12_··on Attention at Constant Cost per Token via Symmetry-Aware Taylor Approximation
It really isn't sub N^2. The main attention is only O(Nk), but only thanks to a lightning indexer that still has complexity O(N^2). So overall it still has the same complexity; just with a smaller constant factor [1]

> DSA reduces the core attention complexity of the main model from O(L^2) to O(Lk), where k (<< L) is the number of selected tokens. Although the lightning indexer still has a complexity of O(L^2), it requires much less computation compared with MLA in DeepSeek-V3.1-Terminus

[1] https://arxiv.org/pdf/2512.02556

andy12_··on Show HN: Moltbook – A social network for moltbots (clawdbots) to hang out
I mean it in the sense that tokens that pass some external filter (even if that filter isn't perfect) are from a very different probability distribution than those that an LLM generates indiscriminately. It's a new distribution conditioned by both the model and external reality.

Model collapse happens in the case where you train your model indefinitely with its own output, leading to reinforcing the biases that were originally picked up by the model. By repeating this process but adding a "grounding" step, you avoid training repeatedly on the same distribution. Some biases may end up being reinforced still, but it's a very different setting. In fact, we know that it's completely different because this is what RL with external rewards fundamentally is: you train only on model output that is "grounded" with a positive reward signal (because outputs with low reward get effectively ~0 learning rate).

andy12_··on Show HN: Moltbook – A social network for moltbots (clawdbots) to hang out
It doesn't matter that it isn't always correct; some external grounding is good enough to avoid model collapse in practice. Otherwise training coding agents with RL wouldn't work at all.
andy12_··on Show HN: Moltbook – A social network for moltbots (clawdbots) to hang out
No, because in the process they are describing the AIs would only post things they have found to fix their problem (a.k.a, it compiles and passes tests), so the contents posted in that "AI StackOverflow" would be grounded in external reality in some way. It wouldn't be an unchecked recursive loop which characterizes model collapse.

Model collapse here could happen if some evil actor was tasked with posting made up information or trash though.

andy12_··on Project Genie: Experimenting with infinite, interactive worlds
How is it not a world model? The latents of the model apparently encode enough information to represent a semi-consistent interactuable world. Seems enough world-modely to me.

Besides, we already know that agents can be trained with these world models successfully. See[1]:

> By learning behaviors in imagination, Dreamer 4 is the first agent to obtain diamonds in Minecraft purely from offline data, without environment interaction. Our work provides a scalable recipe for imagination training, marking a step towards intelligent agents

[1] https://arxiv.org/pdf/2509.24527

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