A plausible assumption is that the principles of language are fixed and innate. (Chomsky 2000: 122; New Horizons)
A plausible
assumption
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is
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the
principles of language are fixed and innate
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A plausible assumption
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is
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the principles of language
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are
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fixed and innate
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Of course, this is not a plausible assumption, because Chomsky also assumes that the principles of language are components of a "genetically-determined" language faculty, and as the evolution of biological species demonstrates, genes and their expressions are not "fixed". If they are "innate", they are not "fixed". Platonic essentialism/idealism is not empirical science.