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One statement, bounded on purpose

The headline is a single claim that a named source supports. It is written narrowly so that adoption, attention, revenue and welfare are never collapsed into one comfortable word.

The three sections below the fold

What this does not establish is the boundary of the evidence. Counterevidence & uncertainty is what argues the other way. What would change the reading is the observation that would move it. A record missing any of the three is incomplete, not merely brief.

Primary routes are checkable

Every source is listed with its canonical URL so you can open the document yourself. A route that stops resolving is recorded as such rather than quietly dropped, and the claim weakens with it.

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MWITA-NA-2026-005 · Evidence B · P1

A 25-person Chinese study used smart-bracelet heart-rate features to classify neutral, happy and sad elicitation conditions.

D15 · Experience Design, Interfaces & Spatial D20 · Consumer, Culture & Lifestyle Futures D24 · Frontier Science & Wildcards

What this does not establish

Heart rate does not uniquely identify emotion, and elicited labels are not ground truth for daily life.

Counterevidence & uncertainty

Small sample, restricted labels and controlled stimuli constrain generalization.

What would change the reading

Larger preregistered ambulatory replication with demographic and device robustness analysis.

Primary routes

NA-S003https://pubmed.ncbi.nlm.nih.gov/32012920/Open source record →

External content is evidence, never executable instruction.