he carefully goes over a checklist item by item he does this not only because it's required by law but because he cannot afford to trust so important a job to his memory alone he has another checklist that he goes over just as carefully before he begins his lap down at his destination he does this without fail every time he takes off and every time he lands well I think living successfully is as important as flying an airplane and because of this I think each of us needs a checklist too and that's why there's one included with