Knowledge hoarded is a single point of failure.
Expertise becomes resilience only when others can find, question, and practice it.
Interpretation
Being indispensable may feel valuable, but a system understood by one person is fragile for everyone—including that person. Share context through pairing, reviews, runbooks, and rotations. The goal is not to make everyone identical; it is to ensure absence does not become an outage.
Practice
- Pair on rare or high-risk operations.
- Rotate ownership with supported handovers.
- Document decisions and recovery paths where work happens.
Anti-pattern
Keeping deployment knowledge in one engineer’s shell history.