What is the origin of the "hierarchy of projections", the language system or (some) conceptual system?
What would be the obstacles to creating a language composed of all the words of all the human languages existing today?
Are coda obstruents a universal, or is the phenomenon that is caused by coda obstruents (vowel epenthesis) a universal?
Are there languages with indefinite articles but for which the word for "one" is not related etymologically to any of the indefinite articles?
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