DR. Strang, from looking at your pass quizzes at MIT  they seem very challenging to me. There are many twist and turns in your quizzes. I hope that the MIT students are learning linear algebra that stays with them forever. These students are supposed to be the world's brightest.####[['DR. Strang', 'Instructor', 'NEG'], ['NULL', 'Other', 'NEG'], ['MIT students', 'Other', 'NEU'], ['linear algebra', 'Mathematical_Related_Concept', 'NEU']]