Rob Napier - "AI makes them slower."
METR just released another report, titled “Measuring the Impact of Early-2025 AI on Experienced Open-Source Developer Productivity.” The pull quote is: Surprisingly, we find that when developers use AI tools, they take 19% longer than without—AI makes them slower. I’ve been pondering this one all morning. I generally like their methodology. Obviously you always want ever-more controlled experiments slicing every possible input, but as a real-world trial, the experimental design I think was very good, and the numbers seem fairly robust.