During my army days, the sergeant major always seem to know where we would fail to clean during inspection standbys, eg the top rim of doors. Part of it is a hazing ritual, but it also means if you know where to look, you know where people will consistently fail. As an SRE who previously had to manually inspect changes and releases, I quickly learn what to check for, and saved many production issues from happening, but I guess nobody will know about the failures that didnt happen, but they will notice the delay I introduced and the inspection process was automated together with the CD system and I am cut out. Fingers crossed the automation is as thorough or can learn common failure modes.