3M expert used ChatGPT to draft ‘0% at fault’ defense report

A Harris County jury awarded $61 million to plaintiffs suing 3M over the January 2020 Watson Grinding explosion in Houston and assigned 30 percent of the fault to the company. The trial record now shows that 3M’s own expert witness generated most of his report using ChatGPT. Court records reviewed by [404 Media](https://404media.co/show-how-3m-is-0-at-fault-expert-witness-used-chatgpt-to-write-report-defending-company-in-deadly-explosion-lawsuit) show plaintiffs’ attorney Will Moye discovered a five-page ‘Citation Overlay’ during discovery and forced production of roughly 350 pages of ChatGPT prompts from Josh Autenrieth of Knighthawk Engineering, the firm 3M paid roughly $90,000 for its analysis. Autenrieth billed at $475 an hour. Among the prompts he fed the chatbot: ‘create an exceptional expert witness report defending the standard of care at 3M’ and ‘show how 3M is 0% at fault for the explosion at Watson Grinding.’ Trial testimony pegged the report at roughly 85 to 90 percent ChatGPT output. “This expert relied on AI not as an assistive device, but exclusively relied on ChatGPT to form his opinions and write his report,” Moye told 404 Media. Autenrieth defended the work from the stand. He testified that “my opinions were put in there, and AI helped me to draft a straw man to build off of,” that he altered any output he disagreed with, and pointed to his “20-plus years of experience in the industry.” The explosion killed three people and destroyed roughly 200 homes; the jury assigned the remaining 70 percent of the fault to Watson Grinding.
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