John Hamilton McWhorter V (born October 6, 1965) is an American academic and linguist who is Associate Professor of English and Comparative Literature at Columbia University, where he teaches linguistics, American studies, philosophy, and music history. He is the author of a number of books on language and on race relations. His research specializes on how creole languages form, and how language grammars change as the result of sociohistorical phenomena.
Read about John H. McWhorter in Wikipedia