A safety checklist is also a record of mistakes someone once believed were too obvious to make.

A checklist is a record of mistakes that once seemed impossible to make. Every line was added because someone competent, under pressure, did not do the obvious thing, and the list exists to make expertise unnecessary at that moment. The apparent stupidity of the items is precisely the point.

So do not skip steps because you know them. Knowing is not the failure mode; forgetting under load is. And in your own work, when something goes wrong for the second time, write the line. A checklist you built from your own errors is one of the most reliable tools available and takes almost no effort to maintain.