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25: 🎂 The Timeline of Timekeeping, Origins of Speech, and the Birthday of Birthdays

Let's Learn Everything!

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Is This a Good Science?

Theory of evolution says that humans can only produce schwa-like vowels. This is the upturned V in the phonetic alphabet, and it's this sound. Only atomically modern homo sapiens adults alone are able to articulate full range of vowels because of shape of their vocal tract. According to theory, our larynx descended, then speech emerged, and then language emerged; these things would have happened almost simultaneously.

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