At any point in time your vision is capturing a 2 dimensional landscape. If your eyes could take photographs every time they shifted focus it would be a series of 2 dimensional images with the illusion of 3 dimensions, just like any other photo. We assume that we are perceiving 3 dimensionally because we can change our focus and navigate the world around us, but it is still a series of 2 dimensional stills running through our perception in a liniar progression. Do we just assume we perceive the world in 3D or is it actually a trick of perception? If this is true how is it possible, at least visually, to extend beyond our current limits?