In 10-15 years, I can see most students carry an iPad-like device to school instead of a bunch of books many (esp in Asian countries) need to put in their bags

In 10-15 years, I can see most students carry an iPad-like device to school instead of a bunch of books many (esp in Asian countries) need to put in their bags today. It would also be a great replacement for brick-heavy textbooks. If we can collectively break the textbook oligopoly, the costs would be much lower as well. Together with video lecture inserts to clarify difficult points and interactive & intelligent tutoring software, this could potentially change the way people learn.