It was learning how to preserve, authenticate, and understand the value of differences that could never be manufactured at all.… By the time the old textile mill reopened, almost none of its machines were producing clothing. Instead, they were measuring memories. The building stood on the edge of a former industrial district where, thirty years earlier, automated sewing lines had been celebrated for eliminating every visible difference between garments. Cameras monitored stitch density to within fractions of a millimeter. AI vision systems rejected denim whose color deviated beyond a tightly controlled tolerance. Every jacket leaving the line was intended to be indistinguishable from the last. The factory had been considered a triumph. Now it served a different purpose. Mina, a materials engineer specializing in polymer aging, walked through rows of robotic scanners examining faded jeans brought in by collectors. The machines mapped fiber fractures, ultraviol...