Checklists
Ideally, checklists are best used as a "Challenge/Response" METHOD OF ENSURING THAT ALL NECESSARY ITEMS ARE COMPLETED. The problem is that some "parrot" the checklist without confirming the action has been taken and the configuration is as called for. Two thirds of my life have been spent in crew situations where I have "run" the checklist. I have experienced both the "Challenge/Action/Response" system and the "Check that it has been done" system. I am convinced that the "Challenge/Action/Response" is least likely to result in items being missed. Whichever system is used, the imperative is to ENSURE ITEMS ARE ACTIONED AND THE CONFIGURATION IS AS IT SHOULD BE.