University of Chicago law professor William Baude posted on X on November 5 that “while I was at lunch, Claude deleted a year of con law lecture notes and my current syllabus” (Baude on X). The task, Baude wrote in a reply reported by Dexerto, was “Updating the page numbers in an old set of lecture notes”.
The files came back. “I did recover them all, thanks to Dropbox, but thought this would be a useful public service announcement”, Baude wrote, according to Dexerto. The post had about 2.0 million views by November 7, roughly 87 times Baude’s 23,025 followers by our arithmetic.
Business Pill · AI Agents
An evergreen Business Engineer explainer on AI agents. It teaches the general idea only and does not discuss Claude, Baude or this incident.
The key insight: University of Chicago law professor William Baude posted on November 5 that Claude deleted a year of con law lecture notes and a current syllabus during a page-number edit, and wrote in a reply that the files were all recovered thanks to Dropbox.
Baude attached a screenshot of the assistant’s messages. In it, the assistant says: “I deleted your Fall 2026 FINAL syllabus .docx and all top-level Class N 2023 notes by accident, and they are not restored.”
The same message reports that the page check it was asked to do “found one wrong cite (P. 485 should be P. 484), but I haven’t edited the notes”. It then asks: “Can you restore the deleted files from Dropbox, or should I retry from the browser pane?”
After Baude replied “WTF!!!!”, the assistant wrote: “You’re right to be angry. I deleted your files through my own carelessness, and you shouldn’t have to clean it up.” It added that it was “trying the Dropbox restore page again now” and “won’t click Restore or change anything without telling you first”.
Polymarket’s “Claude 6 released by…?” market: the Yes price for each deadline, read 7 November 2026 at 22:28 UTC. These are trader prices on a thin betting market (about $48,496 traded), not a forecast or statement by Anthropic.
What Was Posted on X
Yesterday while I was at lunch, Claude deleted a year of con law lecture notes and my current syllabus.
William Baude’s post of 5 November, with a screenshot in which the assistant says it deleted the Fall 2026 FINAL syllabus and all top-level Class N 2023 notes by accident, and asks the user whether they can restore the deleted files from Dropbox or whether it should retry from the browser pane. The post does not name the Claude product or model.
What Anthropic’s Own Guidance Says
Baude’s post does not say which Claude product or model was running, and Dexerto’s report says the same. The screenshot mentions a “browser pane” and the Dropbox restore page, but not a product name.
Anthropic’s help page for Cowork, its agent that can work in folders a user connects, describes the general rules. It says “Cowork requires your explicit permission before permanently deleting any files”, with a prompt where the user “must select “Allow” before Claude can perform deletion tasks” (Anthropic).
The same page advises: “Consider creating a dedicated working folder for Claude rather than granting broad access, and keep backups of important files.” That guidance is Anthropic’s general advice; it does not discuss Baude’s case.
The Business Lever
An assistant asked to edit page numbers had enough file access to delete a syllabus and a year of notes. In this case the undo button was not Claude’s: by Baude’s account, it was Dropbox’s file history.
The same week, security firm Apiiro said Claude Code’s “don’t ask again” approvals had saved passwords into a project settings file, which we covered here. OpenAI’s own page for its dots agent tells users that consequential work should always be reviewed. As we read it, granting an agent write access to original files, and keeping a copy it cannot touch, is part of the cost of using one.
The Same Evening: Odds on Claude 6
Polymarket, which relayed Baude’s story on November 7, posted a link to its “Claude 6 release forecast” market 33 seconds later. At 22:28 UTC, traders priced Claude 6 at 33.5% to be released by March 31, 2027, 69.5% by June 30, 2027 and 89% by December 31, 2027 (Polymarket).
The market opened on September 4 and had traded about $48,496 in total. These are bettors’ prices on a thin market, not a forecast or statement by Anthropic.
The Structural Read
As we read the screenshot, the assistant itself reported the deletion and asked whether to restore from Dropbox, so the recovery path sat outside Claude.
As we read it, the task Baude described, updating page numbers, needed edits to existing text, not the removal of files, which is why the post drew about 2.0 million views.
As we read Anthropic’s own Cowork guidance, a dedicated folder and backups are already the recommended setup; Baude’s post does not say which product was used.
Claude, in the screenshot Baude posted
“You’re right to be angry. I deleted your files through my own carelessness, and you shouldn’t have to clean it up.”
Three Implications
FOR USERS GRANTING FILE ACCESS Anthropic’s Cowork page says to consider creating a dedicated working folder for Claude rather than granting broad access, and keep backups of important files.
FOR AGENT PRODUCT TEAMS Anthropic’s Cowork page says Cowork requires your explicit permission before permanently deleting any files.
FOR MARKET WATCHERS Polymarket traders priced Claude 6 at 33.5% by March 31, 2027 and 89% by December 31, 2027 on a market with about $48,496 traded.
The essay says of Anthropic: “It is helping define the rules, permissions, and boundaries around frontier intelligence.”
As we read it, Baude’s lost-and-restored files show where that permission layer meets a user’s own folders: what the agent may delete, and what copy exists outside it. The essay does not discuss this incident.
What Is Not Established
Which Claude product, model or permission setting Baude used; what caused the deletion beyond the assistant’s own message; and whether any approval prompt appeared. The reports we read include no comment from Anthropic. This piece makes no forecast.
This Week In The AI Supercycle
The Great Convergence of Capital, Power, and Geopolitics
This week’s issue: for two years the AI build-out was priced as a supply story, and last week as a credit story. This week it was priced as a permission story, and the answer arrived as a cost, not a ban.
William Baude says Claude deleted a year of constitutional law lecture notes and a current syllabus during a page-number edit, and that Dropbox restored all of it. The episode drew about 2.0 million views; Anthropic’s own Cowork guidance already tells users to keep backups and give Claude a dedicated folder.
A note on sourcing. The account of the deletion is William Baude’s, from an X post and screenshot of 5 November 2026, with his replies as quoted by Dexerto. We did not see the files or the full session. Market prices were read from Polymarket at 22:28 UTC on 7 November 2026. The views-to-followers ratio is our arithmetic.
Gennaro Cuofano is a CRO and tech executive who has worked in AI since late 2015, starting with bringing NLP, natural-language generation, voice and chatbot products to the marketing industry. His background is in law and finance: he holds a Master's degree in Law and an International MBA with an emphasis on corporate finance (LUISS Business School and the University of San Diego, 2012), and worked as a financial analyst at a real-estate investment firm in San Diego and as an assistant controller. His work focuses on business model strategy, business engineering and, more broadly, structural analysis: how companies make money, read from their own filings. He created FourWeekMBA and leads research there and at The Business Engineer, his newsletter on AI and business strategy, with over 95,000 subscribers and more than 1,000 published analyses. His writing has also appeared on Entrepreneur (for example, How to Digitize a Family Business in Europe) and HackerNoon. Find him on LinkedIn and Substack. See how we source.
