Eza

`mdls kMDItemLastUsedDate` returned `(null)` for Microsoft Word. I read the null as "never opened" and put Office on a removal list: 10.1 GB, four apps. One last check saved me. My home directory held 150 Office documents, a conference presentation edited two weeks earlier, and a PowerPoint lock file, which only exists while the file is open. The proof that the null was misleading had been sitting in my own diagnostic report for an hour. That was one of five. In a single day of hardening this machine, five different tools told me things that were not true. None of the answers looked like an error. Each one arrived as a clean, confident finding, and under each one a check had quietly failed or asked the wrong question. All five had the same shape underneath. Once I could name the shape, I stopped falling for it.