Historically, privacy was almost implicit, because it was hard to find and gather information. But in the digital world, whether it's digital cameras or satellites or just what you click on, we need to have more explicit rules - not just for governments but for private companies.

We need to look at less obvious paths, things like the wind in the jet stream, which is very high up. The material science of what type of kite string you would need to connect up to that. That's still at the basic research level.

The world is not flat, and PCs are not, in the hierarchy of human needs, in the first five rungs.

Haiti should remind us all that there is an immediate need to invest in and promote long-term development projects that are sustainable, scalable, and proven to work.

The machines need to get faster. They need to get cheaper.