When researching and writing about (or designing and producing) hologram simulations, there’s always an initial coming-to-terms with the terms.
When I analyzed the discourses of simulation designers, nearly all of them made some attempt to square and/or pare the language of their field. Designers and artists usually opened interviews with this, eager to make sure I understood that while we call these things “holograms” they’re not actual holography. “The words ‘hologram’ and ‘3D,’ like the word ‘love,’ are some of the most abused words in the industry,” one commercial developer told me. Michel Lemieux at Canada’s 4D Art echoed a common refrain: “A lot of people call it holography. At the beginning, 20 years ago, I was kind of always saying, ‘No, no, it’s not holography.’ And then I said to myself, ‘You know, if you want to call it holography, there’s no problem.’” In my own talks and presentations, I’ve let go of the constant scare-quotes. The Tupac “hologram” has graduated to just being a hologram.
It gets stickier when we begin parsing the myriad and important differences between virtual reality (VR) and augmented reality (AR). Many of us think we have an understanding of both, largely as a result of exposure to special effects in movies and TV — where the concept of a hologram underwent its most radical evolution, from a mere technologically produced semi-static 3D image to a computer-projected, real-time, fully embodied and interactive communication medium — but it’s AR people usually grasp more than VR. They’ll say “virtual reality,” but they’ll describe Princess Leia’s message, the haptic digital displays in “Minority Report,” or the digital doctor on “Star Trek: Voyager.” Neither of these are VR, in which the user dons cumbersome gear to transport her presence into a world inside a machine (think William Gibson’s cyberspace or jacking into “The Matrix”); they are AR, which overlays digital information onto existing physical space.
Yet both VR and AR refer to technologies requiring the user to user some sort of eyewear — the physical reality-blinding goggles of OculusRift (VR) or the physical reality-enhancing eye-shield of HoloLens (AR). Volumetric holograms — fully three-dimensional, projected digital imagery occupying real space — remain a “Holy Grail” (see Poon 2006, xiii) in tech development, and we may need a new term with which to label that experience. One developer just coined one.
I'm THOMAS CONNER, Ph.D. in Communication (Science Studies) and culture journalist.