Tried to tell my kids shark skeletons are entirely cartilage. "What about their teeth?" says one. "How do they make blood cells?" the other.
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Proud of their ability to quickly identify and challenge edge cases and inconsistencies in universal statements.
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(Also TIL about https://en.wikipedia.org/wiki/Leydig%27s_organ …)
10:20 AM - 28 Oct 2017
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