By Edo Segal
The number that broke something open for me was not a technology metric. It was 478 percent.
That is the cost overrun figure that Perplexity returned when Bent Flyvbjerg asked it about the Big Dig — Boston's most infamous infrastructure project. The correct answer, documented in peer-reviewed journals Flyvbjerg himself had published in, was 220 percent. Wrong by more than double. Delivered without a flinch.
I know that moment. I have lived inside it. In Chapter 7 of You On AI, I describe catching Claude attributing a concept to Deleuze that Deleuze never articulated — a passage so rhetorically smooth that I almost kept it. The prose passed every surface check. It failed the only check that mattered: the one against reality. That was
A reading-companion catalog of the 17 Orange Pill Wiki entries linked from this book — the people, ideas, works, and events that Bent Flyvbjerg — On AI uses as stepping stones for thinking through the AI revolution.
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