edX is a simple idea with fantastic outcome: ask great scholars to give lectures, do some questions, and rate students, in an affordable way. It creates life-changing chances for students worldwide. With edX, we have some idea what do students know anywhere, without research what curriculum is at a local university in a faraway land. It is something like "Hollywood in education": we are watching great movies all over the world, and we have some "common ground" facilitating communication. And most important, students can learn from best professors, mastering new recent courses that are just not available locally.
