[kc0bfv]

Recent relevant XKCD. Average Familiarity.

https://m.xkcd.com/2501/

[buzzy_hacker]

I felt this when I, an avid chess player, surveyed friends and fewer than half knew who Bobby Fischer was.

[Waterluvian]

I took two earth sciences classes and even I can’t name any. The best I can do is that silicate is SiO4. I think. And it’s this tetrahedron thing that makes for really tough minerals like quartz. Maybe.