Checklists are useful in many industries, and in many situations. House movers, wedding planners, and tax accountants already use them. In the case of “The Checklist,” doctors in ICUs could use it to remember mundane tasks like making sure to drape the patient’s entire body before running a line–and in doing so can save millions of dollars a year and reduce the death rate of ICU patients, the rate of infection, and the length of time patients spend in the ICU. Pilots can also use it to fly bomber planes… I didn’t know where he was going with the bomber plane story, but it was amazing to see how he managed to tie it in with the rest of the tale.