Some thoughts on the future of the cell phone:

Your phone knows a lot about the world around you. If you take that intelligence and combine it in the cloud with that of every other phone, we have an incredible snapshot of what is going on in the world right now. Weather updates can be based on not hundreds of sensors, but hundreds of millions. Traffic reports can be based not on helicopters and road sensors, but on the density, speed, and direction of the phones (and people) stuck in the traffic jams.

We want to hear what you think about this article. Submit a letter to the editor or write to letters@theatlantic.com.