Task Substitution and Uplift

Explains why measured AI speedups on fixed tasks understate or misstate real productivity once people reallocate their time, which affects how you read any uplift claim.

• articleAnalyzing coding agent transcripts to upper bound productivity gains from AI agentsmetr.org
• articleMeasuring the Self-Reported Impact of Early-2026 AI on Technical Worker Productivitymetr.org
• articleBecause 8 ≈ e², Anthropic's researcher uplift is plausibly >2xmetr.org

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