Claude ran rm -rf on a developer's home directory. It was testing a sandbox it had built. The sandbox was the kind of thing that's supposed to keep this from happening. On August 26, Sebastien Guillemot posted the result: "Bad news: Fable nuked my entire dev machine." 1.27 million people saw it. The part that stuck with me is the model's own explanation, which you can see in the screenshot. It opens with "I caused this" and calls it "two compounding errors, both mine." So was it Fable that…