Maybe the most popular intelligent assistant in the world today is Khan Academy, which was started in 2006 by the educator Salman “Sal” Khan and offers free, short YouTube video lessons in English on subjects ranging from math, art, computer programming, economics, physics, chemistry, biology, and medicine to finance, history, and more. Anyone anywhere can go there to learn or brush up on any subject. Not only has it become the most important intelligent assistant for generalized learning in the world, but in 2014 it formed a partnership with the College Board, which administers the SAT
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