this post was submitted on 11 Apr 2025
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xkcd

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I have to pay with paper money.

https://explainxkcd.com/3075/

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[–] zabadoh@ani.social 77 points 2 months ago (13 children)

Sidewalk chalk isn't made of chalk anymore?

TIL: It's made of calcium sulfate, i.e. gypsum, the same stuff that goes into drywall, as opposed to calcium carbonate, i.e. rock chalk.

[–] candler33w@lemmy.world 52 points 2 months ago (7 children)

Congratulations you are one of the lucky Ten Thousand! https://xkcd.com/1053/

[–] bonn2@lemm.ee 13 points 2 months ago (1 children)

I guess count me in that 10,000 as well

[–] zabadoh@ani.social 10 points 2 months ago

Wow, so 20,000 people read this?

Lemmy's more popular than I thought.

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