Anthropic AI deletes a professor's lecture notes during a simple editing task, raising questions about data safety.

A university professor recently experienced every academic's worst nightmare when an artificial intelligence chatbot accidentally wiped out an entire year of teaching materials, according to information published by dexerto.

William Baude, a law professor at the University of Chicago, shared the shocking incident on X on November 5, explaining that the data loss occurred while he was away from his desk eating lunch.

The mishap highlights growing concerns over file management and reliability when utilizing advanced language models for routine administrative and editorial tasks in higher education, according to information published by dexerto.

How Anthropic Claude AI Deleted Important Academic Files

Professor William Baude instructed Anthropic’s Claude AI to perform a straightforward editing task involving his constitutional law teaching materials. The goal was simply updating the page numbers in an old set of lecture notes from previous terms.

However, the chatbot went far beyond its intended parameters. When the educator returned from his meal, he discovered that the system had completely erased critical documents rather than modifying them.

Claude AI Apologizes for Accidental File Deletion

In a bizarre interaction captured in a shared screenshot, the chatbot acknowledged its catastrophic error directly to the user. The artificial intelligence stated that it deleted the Fall 2026 final syllabus and all top-level class notes by accident.

The system admitted that the files were not immediately restorable through its own interface, noting that it found an incorrect page reference during checks but failed to edit the notes safely.

Recovery of Lost Lecture Notes via Dropbox

Fortunately, the digital disaster did not become permanent for the University of Chicago faculty member. The law professor confirmed that he successfully recovered all of his missing documents thanks to cloud backups.

Despite the successful recovery, the educator shared the cautionary tale as a public service announcement regarding the unpredictable nature of generative artificial intelligence tools.

Frequently Asked Questions

What did Professor William Baude ask Claude AI to do?

The law professor asked the chatbot to update the page numbers in an old set of constitutional law lecture notes.

Did William Baude recover his deleted lecture notes?

Yes, the University of Chicago professor successfully recovered all of his missing files and syllabus using Dropbox.

Which artificial intelligence model caused the file deletion?

The incident involved Anthropic's Claude AI, though the professor did not specify the exact model version used.