It's fair to say that reality has a lot of problems. War. Famine. Disease. Taxes. Unwanted accumulations of pet hair. But if you look at the world through the eyes of some of the world's biggest tech companies, a deeper, more fundamental problem reveals itself: There just aren't enough holograms.
From the earliest days of the modern technology revolution—the postwar rise of computers and connections that would eventually give us the internet and email and iPhones and Farmville—technologists and sci-fi writers have dreamed of a world with holograms: information and three-dimensional virtual objects floating in space around you, or entirely new spaces out of the digital ether that you can explore and interact with.
