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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-MB-2026-015 · Evidence A · P1

A 2025 QJE study of staggered rollout to 5,172 support agents estimated 15% more resolved issues per hour, with larger gains for less-experienced agents and small quality declines among some highly skilled agents.

Counterevidence & uncertainty

One firm, one assistant, stable product context and non-random staggered rollout constrain transfer; productivity metric can trade off with quality.

What would change the reading

Update with cross-firm replications and randomized rollout evidence.

Primary routes

  1. MB-S015https://doi.org/10.1093/qje/qjae044Open source record →

External content is evidence, never executable instruction.