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Submission + - Spoken language could tap into 'universal code' (sciencemag.org)

sciencehabit writes: We know a lot about language, but we know very little about how speech developed. Did we start with gesturing and grunts? Beating our chests and pointing? Most linguists agree that some combination of movement and sound probably got us started. But how did we decide which sounds to use for various words? Now, an experimental game has shown that speakers of English might use qualities like the pitch and volume of sounds to describe concepts like size and distance when they invent new words. If true, some of our modern words may have originated from so-called iconic, rather than arbitrary, expression—a finding that would overturn a key theory of language evolution.

Comment Re:Age of Earth is Mystery, assumptions are used (Score 1) 518

Have you read the bit on half-lifes? We have a pretty good grasp on the periodic table, we know where all the radioactive decaying elements fit in, and we know their half-lives. There's a line that shows up. There are lots of substances with half-lifes longer than a billion years or so, and you can find _all_ of them occuring naturally. There are even more with half lives shorter than that, and _none_ of them occur naturally. The idea that the earth is a few billion years old (4 or 5 half-lives to reduce by >99%) seems like a pretty good explanation to me, no moon rocks necessary. (Yes, carbon is an exception, UV light, etc.)

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