I don't take a lot of swag anymore. I spend a lot of time working trade shows, and after a while, you can only have so many pens and t-shirts before you say enough. However, for the first time in a while, not only did I keep a piece of swag, I kept it on my desk. It's a 3D printed gear. It has a center gear wheel, with five gears connected, which move around the inside of the outer ring, which also has gears. And, it says "Rethink Everything" on the edge. The engineer who gave it to me explained that he comes from a mechanical engineering background, and that the gear itself would be impossible to create in a shop. The only way to create this object would be to 3D print it. The idea -- we can now create objects in the physical world that were entirely impossible before. Technology is moving so fast in ways that we can barely comprehend. In many ways, we actually live in the future now. What does it mean? Where is it going? What can