"blameless postmortem" entries

Postmortems, sans finger-pointing: The O’Reilly Radar Podcast

In this episode, John Allspaw talks in-depth about blameless postmortems and creating a just culture.

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When you’re dealing with complex systems, failure is going to happen; it’s a given. What we do after that failure, however, strongly influences whether or not that failure will happen again. The traditional response to failure is to seek out the person responsible and punish them accordingly — should they be fired? Retrained? Moved to a different position where they can’t cause such havoc again?

John Allspaw, SVP of technical operations at Etsy and co-chair of the O’Reilly Velocity Conference, argues that this “human error” approach is the equivalent of cutting off your nose to spite your face. He explains in a blog post that at Etsy, their approach it to “view mistakes, errors, slips, lapses, etc., with a perspective of learning.” To that end, Etsy practices “blameless postmortems” that focus more on the narrative of how something happened rather than who was behind it, and that remove punishment as an outcome of an investigation.

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