"Human Error" is a label that stops investigation. Learn how to run truly blameless post-mortems that uncover systemic flaws rather than punishing individuals.
We see it in incident reports constantly.
Root Cause: "Engineer A typed the wrong command." Action Item: "Engineer A will be more careful next time."
This is not a root cause; it is a cop-out. "Be more careful" is not a strategy. You cannot patch a human being. If your system allows a single typo to take down production, your system is the problem, not the typist. In high-performing engineering organizations (like those modeled after Google's SRE practices), "Human Error" is the starting point of the investigation, not the conclusion.
A "Blameless Post-Mortem" does not mean everyone holds hands and pretends mistakes didn't happen. It means assuming that everyone involved was well-intentioned and made the best decisions they could with the information they had at the time.
If you fire the engineer who crashed the database, you have achieved two things:
To move past "Human Error," apply the Five Whys technique. Let's look at a real-world example from a Seya Solutions client:
The Incident: The billing service went down for 2 hours.
The Real Root Cause: The validation tooling is too slow, incentivizing risky behavior. The Fix: Create a fast, lightweight syntax linter that runs automatically on every git commit.
A professional post-mortem document should be standardized. It must include:
Post-mortems should not be written in isolation. Host a review meeting. Invite people who weren't involved in the incident. Their fresh eyes will ask the "dumb questions" that expose hidden assumptions. ("Why does the billing service have write access to the user database?")
These meetings are the highest-ROI activities a tech team can do. They are where senior engineers transfer their intuition to junior engineers. They transform a painful outage into a permanent leveling-up of the organization's resilience.