For me, personally, it's the divisible-by-three check. You know, the little shortcut you can do where you add up the individual digits of a number and if the resulting sum is divisible by three, then so is the original number.
That, to me, is black magic fuckery. Much like everything else in this thread I have no idea how it works, but unlike everything else in this thread it's actually a handy trick that I use semifrequently
https://apnews.com/article/israel-hamas-palestinians-opinion-poll-wartime-views-a0baade915619cd070b5393844bc4514
I'm sorry, but that's not what the article says. 90% of respondents think Abbas should resign, but that is separate from "approval". FTA: