OK OK, checklists can help a lot BUT they sometimes (often) fails. Or better, the person who is using it fails (failure == NOT achieving the result that’s the checklist is helping to achieve)

I think this happens for two (good) reasons:

  1. a good job is correctly done when is correctly done and not when something is written in a piece of paper;
  2. a checklist is made of steps but each step, no matter how simple it is, has to be done by a person. This person might or might not do that step, AND this person might or might not do it properly.

So checklists are useful, are not ensuring anything and must be used cum grano salis.