Anders Sandberg on fluid computation: error budgets tighten quadratically over time
anderssandberg · x · 2026-10-16
Anders Sandberg offers a sober technical take on a fluid-computation result: nearly all complexity sits in the force field, with nonzero viscosity, smooth fields, zero initial velocities, and no oracle force. The spatial error budget is OK but tightens quadratically as computation lasts, with total work growing quadratically too. He cites the paper "Rapidly Vanishing Navier–Stokes Forcing," which seems to have a finite work limit that needs shrinking.
Related event: OpenAI Shows Forced Navier-Stokes Flows Can Carry Universal Computation(5 posts)→
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