Tribal knowledge is two different things wearing one name. The half everyone panics about losing was declared in your Terraform, your Dockerfiles, and your CI config the whole time. It usually starts with a calendar invite that has no agenda. Thirty minutes, your senior platform engineer, no subject line. You half know before you sit down. They have been here six years. They are leaving in a month. The first day you feel it as a personal loss, because it is one. The operational version arrives l