Khan Academy Grammarian David Rheinstrom welcomes you to his favorite topic: the study of language, its rules, and its conventions. By understanding English - by speaking it, by writing it, by reading this very sentence - you are a grammarian yourself! "What's a grammarian?" you might be asking yourself. Courtesy of superuser Trek, [here's](https://www.khanacademy.org/computer-programming/01
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