AI in legal: the Mata lesson.
Mata v. Avianca and the Boca Raton chatbot's fabricated 2022 Florida statute amendment are the same lesson, three years apart. LLMs answer questions they were not asked, confidently. On a law firm site, that is a malpractice risk.
Mata v. Avianca, the 2023 federal case where an attorney filed a brief citing six fabricated court decisions generated by ChatGPT, was not a one-off mistake; it was a structural property of LLMs deployed without scope containment. Three years later, our own field reports show the same failure pattern in a Boca Raton estate planning chatbot that fabricated a 2022 Florida elective share amendment. The fix was never smarter AI. It was hard scope: every out-of-scope question routes to a consultation booking, every response carries a general-information disclaimer, and the model never attempts to answer anything it was not explicitly trained on. The longform with the deployment checklist ships in June 2026.
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Related reading
- 01
The law firm chatbot that made up case law.
Boca Raton, FL
Why scope containment beat smarter AI.
- 02
AI for lawyers.
Where AI helps in a law firm and where it creates liability.
- 03
Clio AI integration.
Intake qualification, document triage, conflict scanning, all gated by scope.