The Checklist Manifesto
How to Get Things Right
The big idea
Most failure by experts isn't ignorance — it's not applying what they already know. A dumb piece of paper beats a smart person's memory, and the smart people are exactly the ones who resist it.
Why it matters
In 1935 Boeing's new bomber crashed on its first test flight and killed the pilot. Not a design flaw — he'd forgotten to release a lock on the controls. One of the most experienced pilots in the Army Air Corps, killed by a step he knew perfectly well. The papers said it was too much airplane for one man to fly. Boeing's fix wasn't more training. It was a checklist you could fit on an index card. Gawande, a surgeon, found the same thing in medicine: Peter Pronovost put five obvious steps for inserting a central line — wash hands, drape the patient, and so on — on a card in Johns Hopkins ICUs. Doctors skipped at least one step a third of the time. When Michigan's ICUs adopted it, line infections fell to near zero and the state credited it with saving over a thousand lives in a year and a half. Every doctor already knew all five steps.
Use it today
Look at the thing you've done a hundred times and still occasionally botch — the deploy, the client email, packing for a trip. Write down the four or five steps you skip when you're rushed. Not a manual. Five lines. The test of a good checklist is that it fits on one page and catches only the things that actually kill you.
Drop it in conversation
“The interesting part of the checklist thing isn't hospitals, it's the resistance — surgeons hated it, because a checklist implies you might forget something, and being the person who doesn't forget is the whole identity. It works precisely on people who think they don't need it.”
In real lifeThe cook who has made the same dish for years still tapes the order ticket where they can see it, because the night they trust memory is the night the sauce goes out without salt. A parent who has done the school run a thousand times keeps bag, lunch, keys as a fixed three-item sweep at the door — the routine is exactly why it's easy to walk out without one of them. A pilot with twenty thousand hours reads the pre-flight card out loud anyway, not because they've forgotten it but because reading it costs ninety seconds and forgetting costs everything. In each case the checklist isn't there for the hard parts. It's there for the parts so familiar you stop seeing them.