I think that's a different matter. Using checklists to automate a task, and make sure you don't skip any is working. Random obstacles before dangerous acts IMO

I think that's a different matter. Using checklists to automate a task, and make sure you don't skip any is working. Random obstacles before dangerous acts IMO make little to no use. Before destroying a house a checklist can ensure that they checked if there are anyone in the building (i seriously have no idea how they do that), but requiring them to stand on one leg with pinched nose, I don't think that'd have any use.