Limestone chalk under the electron microscope: composed almost entirely of the tiny skeletons of ancient ocean-dwelling organisms
Yah that definitely makes the whole concept of chalkboards way more metal.
Like imagine you were one of those creatures and someone told you that when you died your bones would be compacted into stone along with countless others and then 90 million years later giants would cut the bones of your people into rods and crush them onto great walls to inscribe information.
@benjancewicz all math is bone math
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