Document Type

Article

Publication Date

Spring 2026

First Page

12

Volume

51

Issue

1

Source Publication Abbreviation

Montana Lawyer

Abstract

This Article examines the technological causes of hallucinations, distinguishing between misgrounded errors and fully fabricated content, and explains why even sophisticated legal‑specific AI tools cannot eliminate the problem. Drawing on recent sanction decisions and professional responsibility rules, the Article demonstrates that reliance on hallucinated authority routinely results in monetary sanctions, disciplinary referrals, and adverse litigation consequences, regardless of intent or awareness. The Article further argues that hallucinations are not a temporary flaw but an inherent feature of generative AI systems. It concludes by outlining concrete research and verification practices lawyers must adopt to detect hallucinations and by reaffirming that ethical legal practice in the AI era requires sustained human judgment and accountability.

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