@pythy Since each of your eyes is a single lens camera, each one sees only a two dimensional picture of reality which the optical center assembles into a three dimensional model in your mind through interpolation. Looking at a three dimensional holograph is no different than looking at a three dimensional solid object. Your argument is tripe.
Having seen a 3DS for a few moments, I was startled that the image visibly and solidly appeared to extend out from and back into the screen with no distortion or video buffering. My jaw dropped, literally. I don't need anything for my pocket tasks beyond my DSi XL; Korg DS-10 and M01 synthesizers and maybe some Mahjongg or Earthworm Jim once in a while. I like the XL's larger screens, in particular. If there were a 3DS XL for a reasonable price I might have gone for that. Nintendo's 3D is, indeed, more than just a gimmick. I envision great possibilities. Actual contour maps for travelers and hikers; remote surgical instruction for dire emergencies, allowing a surgeon to talk a layman through procedure to save someone's life on the spot, with 3D directions and examples in real time; molecular modelling tools for geneticists and pharmacologists; real 3D chess like in Star Trek; the possibilities are endless. Did I mention porn? 3D pocket porn? Don't scoff. The Internet was paid for with porn.