The first cut, of course, enables me to chortle that other people show so little awareness of their folly. Not only are they foolish, but their limitations prevent them from recognizing the full extent of their occlusion! Lord, what fools these mortals be!
The second cut so neatly severs my vanity from me that one might easily miss the line of the cut. If semi-competent people can’t see their own limitations, then my own confidence that I’m not one of them. . . may be misplaced.
Luckily, I am protected from error because I so regularly encounter people who know so much that they couldn’t possibly be wrong.