Most lists, he writes, have six to 10 items, although it is daunting to learn that 6 per cent of lists have more than 40. He has also looked into how well the tasks are completed. Most people, it seems, get somewhere between a third and two-thirds of their daily jobs done and, entirely predictably, just one person in a 100 manages the whole lot. Martin includes some pithy quotes from people who use lists. There's the person who finds that the job changes so much it is hardly worth making a list at all, and the manager who uses the list as a low key entry to the day: "I generally start by completing an easy item before trying to tackle the top priority."
I reckon, though, that many school leaders will be on the side of the one who writes: "The number of incoming items and areas requiring vigilant monitoring continues to replace if not outpace the speed at which items can be considered complete." (I say if it takes this guy 25 words to say, "I've got too much to do", no wonder he's in trouble.) None of Martin's subjects, though, seem to emulate Sir Christopher's alleged habit of adding items to his lists that he's already done, just to have the satisfaction of ticking them off. I wonder if he plays the sax?