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ZuoCen_Liu

HN member
Joined
Sun, Dec 14, 2025, 10:41 AM UTC
HN karma
53
Public activity
46 items

About ZuoCen_Liu

Turning the "Δt dilemma" into adaptive, continuous physics.

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 …