• @[email protected]
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    7822 days ago

    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.

      • @[email protected]
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        322 days ago

        I would say it’s probably a lot less than ten thousand - I doubt this is something “everybody knows”

        • Cactus_Head
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          121 days ago

          i pretty sure those numbers are in reverse, at least if i understand you correctly. Its 1 in 10(lots of ppl know) then 1 in 10(less ppl know) and so on.

          • @[email protected]
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            121 days ago

            Nope. Not reversed. The guy I responded to thinks that almost everyone (9,999 out of 10,000) knows sidewalk chalk isn’t made out of chalk. I’m saying it’s not even as common as 9 out of 10 know that sidewalk chalk isn’t made out of chalk.

            In fact, I’d say the odds are more like 1 out of 2, at best. Possibly even that more people would give the wrong answer than the right one.