I have never flagged anything at HN before, but this has absolutely nothing to do with the characteristics I associate with HN. Plus the "things that most Americans don't know" are pablum I've seen so many times before as to be boring.

I would have preferred to keep my mouth shut, but when my own (software-development oriented) submissions have been flagged, I've groused that I wish flagging required a brief written justification. So I felt obligated to write this to explain myself.