pull down to refresh

my kid asked me if it was opposite day today.

broke my head.

good time to teach him/her about Russell's Paradox and Zermelo-Frankel set theory.

reply
Zermelo-Frankel set theory

I didn't know about this previously. Just went down a pleasant rabbit hole. Thanks!

reply

So your head didn't break?

reply

it was opposite day.

reply

Yes

reply