Now when haven’t you wanted to be able to see thing from the perspective of a giant? These clever guys built a device that tricks your brain into thinking that your eyes are about ten feet apart and not the normal 2.5 inches. The effect is enhance the stereo effect and ‘shrink the world’. You can do the same thing with a camera by taking two photos of the same thing (it has to be large and far away) from two points that are separated by a few feet. But looking at photos isn’t the same as seeing it in real time with your own eyes, you lose a lot of the coolness.
Building one of these and putting it near the Grand Canyon or Niagara Falls and charging a quarter for a look would make you rich.