and made notable claims about its perception of time. He also conducted research on the Uto-Aztecan languages, publishing influential papers. In 1938, he substituted for Sapir, teaching a seminar on American Indian linguistics. Whorf's contributions extended beyond linguistic relativity; he wrote a grammar sketch of Hopi, studied Nahuatl dialects, proposed a deciphering of Maya hieroglyphic writing, and contributed to Uto-Aztecan reconstruction.

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