paimin writes: Various sites are covering the rather silly claim that CNN beamed a hologram of correspondent Jessica Yellin into the studio with Wolff Blitzer. It really amounts to a live Matrix-esque effect of surrounding the subject with video cameras to achieve the illusion of panning around them. Ultimately, it was pure illusion, only for the benefit of the viewers at home. The question is, was it a useful illusion, or was it just silly?
We warn the reader in advance that the proof presented here depends on a
clever but highly unmotivated trick.
-- Howard Anton, "Elementary Linear Algebra"