Know-how and sophistication have increased remarkably across almost all our realms of endeavor, and as a result so has our struggle to deliver on them. You see it in the frequent mistakes authorities make when hurricanes or tornadoes or other disasters hit. You see it in the 36 percent increase between 2004 and 2007 in lawsuits against attorneys for legal mistakes--the most common being simple administrative errors, like missed calendar dates and clerical screwups, as well as errors in applying the law. You see it in flawed software design, in foreign intelligence failures, in our tottering banks--in fact, in almost any endeavor requiring mastery of complexity and of large amounts of knowledge. Fortunately, as The Checklist Manifesto describes, one potential solution for reducing or eliminating errors in complex jobs is rather simple--a checklist.