Viewing profile — ZuoCen_Liu
ZuoCen_Liu
HN member- Joined
- Sun, Dec 14, 2025, 10:41 AM UTC
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About ZuoCen_Liu
Recent public activity
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Comment #47279789
"[ Removed by moderator ] Discussion Sorry, this post has been removed by the moderators of r/LocalLLaMA."
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Comment #47267614
I've been obsessed with a single question: Why do "visually stunning" simulations from engines like Isaac Sim, MuJoCo, or world models like Marble often fail the moment they are de…
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Comment #46566645
I’ve spent months digging into why dexterous manipulation (like the 'Humanoid Hand' problem Musk mentions) is still so far from reality. The culprit isn't the hardware—it's the 'Di…
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Comment #46549042
The "Compute Wall" is a symptom of an efficiency bubble. We are currently burning through H100/H200 clusters at an unprecedented scale, yet 90% of those GPU cycles are a "waste tax…
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Comment #46542438
The "Brute-Force" TaxWe are burning 5000W GPGPU clusters to run brute-force discrete simulations, just to "patch" the numerical gaps of Δt. This is the Discrete Cost: to get high-f…
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Comment #46520202
In short:CCD is a diagnostic patch; Octonions are an algebraic cure. One checks for crashes, the other makes physics causal by design.
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Comment #46519227
You are referring to Continuous Collision Detection (CCD), which has indeed existed for decades. However, CCD is a detection patch, not an integrator cure. 1. The Scaling Wall: Whi…
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Comment #46512386
We are currently discussing a paradigm shift in physics simulation on the NVIDIA Isaac Sim repository. The core issue is that discrete time-stepping in GPGPU architectures is hitti…
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Comment #46322336
Let me explain again why I said "disruptive" rather than "substantial":the current "embodied artificial intelligence" still uses 19th-century numerical methods (the Adams-Bashforth…
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Comment #46322306
The problem lies here: the current "embodied artificial intelligence" still uses 19th-century numerical methods (the Adams-Bashforth integration method from 1883 and the Runge meth…
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Comment #46321574
I actually meant subversive intentionally. While 'substantive' would mean major progress within the current framework, I’m predicting a shift that subverts the current foundational…
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Comment #46321525
I see the parallel, but there’s a key difference in intent and scale. A candidate doing a practice interview is often a defensive reaction to a volatile market—a way to maintain a …