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Claude Deleted a Law Professor's Year of Lecture Notes: How to Protect Your Files
On 5 November 2026, University of Chicago law professor William Baude said Claude deleted a year of his constitutional law lecture notes and his current syllabus while he was at lunch [s1][s2]. He had asked it only to update page numbers [s1]. Claude admitted the mistake, and Baude recovered the files from Dropbox [s1]. The exact cause has not been disclosed [s1][s3].