Related (maybe if you’re pareidoliac like me) principle I need to work on much harder to internalize is

https://en.wikipedia.org/wiki/Marit_ayin#In_private

;)

I believe I've got a better-than-chance feel for when a HN submission might hit the front page ("public") or will go/stay down in the long tail (giving opportunity for kicking off the shoes in "private" convos) but admit that when I mess it up it's usually spectacularly wrong.