Memo: Brown Just Quietly Proved That Your Prompt Is Lying to You. Project Deal Already Proved It in a Different Domain. Nobody Has Connected Them.

A Brown University study of 110 therapy sessions, presented at AAAI/ACM and broadly covered in March 2026, found that improved prompting did not resolve the core ethical violations of LLMs acting as mental health counselors. Two months later, Anthropic&apos;s Project Deal published the same finding in a