See that picture to the left. It is a picture taken of a room with a billards table, can you tell what part of the picture is fake? We have all hard of super imposed by now (even the talking goat from Adam Sandler’s comedy cd in the 90s is now aware of the power of superimposing.) What makes this a breakthrough is that fact that the 3d objects (by the way, the balls on the table are the fake objects) were super imposed onto a flat, 2D picture. Even more interesting is that fact that those 3D objects can interact with the 2D objects in the picture, as if they were 3D them selves. Check the demo by Kevin Karsch (below) where you can see what I mean. Basically, you can take picture of a hall with stairs, and later add a 3D virtual ball to the picture, and in seconds watch the 3D ball bounce its way down the stairs case. Pretty B.A.