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Flipping you. also said the education system we inherited from prussia 200 years ago, prussia doesnt exist anymore and the system has to change. is that still your view? >> yeah, absolutely. this isnt a u.s.-specific thing. the prussian model of education, prussia was kind of the seed of modern germany, is the education model thats used everywhere including singapore and south korea and finland. >> what is flipping? i dont know what that is? >> flipping is the idea -- i started off making videos...