AI researcher: single-dimension "capabilities" evals have poor predictive power

joshua_saxe · x · 2026-11-10

AI researcher Joshua Saxe argues that discourse collapses AI into a single dimension—"capabilities", "progress", "intelligence"—obscuring the poor construct validity of offline evals, which are just averages over tasks.

His take: these averages have very poor predictive power over real-world outcomes, so the bad abstractions will evaporate. The future he sees is domain experts ramping up on AI and explaining back what AI trajectories mean in their own fields—how AI is changing a discipline, how to accentuate its affordances and mitigate risks, and what comes next. He calls this "AI social impacts as normal epistemology" and says it can't come fast enough.

Related event: Anthropic CTO Criticizes Offline Benchmarks, Calls for Real-World AI Metrics(3 posts)→

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