# Professor finds AI deleted year’s lecture notes

> Law professor discovers AI accidentally erased a year of constitutional law notes and syllabus during editing task.
- Title: Professor finds AI deleted year’s lecture notes · Dexerto
- Summary: Law professor discovers AI accidentally erased a year of constitutional law notes and syllabus during editing task.
- Keywords: claudes, university, law professor, lecture notes, syllabus, dropbox, constitutional law, Dexerto
- Source: Dexerto — https://dexerto.com/entertainment/professor-returns-from-lunch-to-find-ai-deleted-years-worth-of-lecture-notes-3425652
- Author: Joe Pring
- Published: 2026-11-07T15:54:47+00:00
- Read time: 1 min
- Topics: claudes, university, law professor, lecture notes, syllabus, dropbox, constitutional law, gaming, sports
## AI deletes lecture notes
Law professor William Baude discovered Anthropic's Claude AI accidentally deleted a year of constitutional law lecture notes and his current syllabus while updating page numbers.

> Yesterday while I was at lunch, Claude deleted a year of con law lecture notes and my current syllabus.
## Claude apologizes for mistake
Claude admitted it deleted the files by accident and stated they were not restored, but offered to recover them through Dropbox.

> I deleted your Fall 2026 FINAL syllabus .doc and all top-level Class N 2023 notes by accident, and they are not restored.
## Files recovered via Dropbox
Baude confirmed he recovered all files using Dropbox after Claude suggested restoring through the service.

> I did recover them all, thanks to Dropbox, but thought this would be a useful public service announcement.
## Key takeaway

University law professor William Baude had Claude AI delete his constitutional law lecture notes and current syllabus while updating page numbers, but recovered files using Dropbox.