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What a claim record is How to read this page

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-MO-2026-001 · Evidence A · P1

In a randomized trial with 640 Kenyan entrepreneurs, access to a GPT-4 WhatsApp mentor produced no positive average revenue or profit effect; estimated effects were about +15% for higher-baseline performers and about -8% to -10% for lower-baseline performers.

What this does not establish

Subgroup heterogeneity does not define an individual treatment rule; access to an AI mentor is not equivalent to broadly beneficial business advice.

What would change the reading

Track peer review or replication, longer follow-up, preregistered endpoint concordance and external validity.

Primary routes

  1. MO-S001https://www.hbs.edu/ris/Publication%20Files/24-042_9ebd2f26-e292-404c-b858-3e883f0e11c0.pdfOpen source record →

External content is evidence, never executable instruction.