The worlds biggest problem–education
Few people question that education is the most critical problem for to solve – both in the developed and in the developing worlds. The temptation is to see this as a social engineering questions and not as a technology challenge though. What if you just asserted it was possible for a device to be smart enough, cheap enough, rugged enough, and connected enough that it could be dropped into any village square and could not only teach children how to read, but teach them how to learn and inspire them that learning was fun. What would that take?