Jev vs GPT-4.1 on a synthetic survey

Survey research: runs Jev and GPT-4.1 as the same 300 synthetic respondents over 24,596 paired Twin-2K-500 cells under criteria fixed in advance, finding that asking a yes/no item as `Noul` rather than `Choice` moves the result more than the gap between the two models, at a thirty-fourth of the cost. Write-up: [jjd-lab.github.io](https://jjd-lab.github.io/jev-synthetic-survey/)

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