I wish it were that simple. Unfortunately we have a tendency to never learn from our mistakes. Most of the time accident reports are never released to the public, and if they are the results are somewhat 'skewed' by political or personal concerns. And most of the time the blame is popularly placed on extremely extenuating circumstances like mysterious mountain winds, unfair mechanical issues and such like. Fault is rarely put where it is most deserved.
And so, we are doomed to repeat the same stupid mistakes again and again. Mere checklists are hardly man enough to stem the onslaught of errors....