Learning by doing, peer-to-peer teaching, and computer simulation are all part of the same equation.

Learning is finding out what you already know. Doing is demonstrating that you know it. Teaching is reminding others that they know just as well as you. You are all learners, doers, teachers.

The laptop brings back a more seamless kind of learning.

We have to make machines understand what they're doing, or they won't be able to come back and say, 'Why did you do that?'

Learning is finding out what you already know, Doing is demonstrating that you know it, Teaching is reminding others that they know it as well as you do. We are all learners, doers, and teachers.

It's hard to propose a $100 laptop for a world community of kids and then not say in the same breath that you're going to depend on the community to make software for it.