Neuromancer
Gibson coined the word "cyberspace" in a short story two years earlier, but Neuromancer gave it a geography. The novel describes a "consensual hallucination" — a graphical representation of data abstracted from the banks of every computer in the human system, a space you could enter, navigate, and get lost in. What makes the book remarkable is not the prediction but the phenomenology: Gibson wrote about what it would feel like to inhabit a digital space before any such space existed to be inhabited. The hacker Case experiences cyberspace as a place with texture, distance, and danger — not as a screen but as an environment. This intuition — that the digital would be experienced spatially, that people would feel inside rather than in front of — shaped everything that followed: the design language of virtual reality, the vocabulary of the early web, the metaphors that Barlow and Rheingold used to describe online community. Gibson famously wrote the novel on a manual typewriter. The most consequential space of the late twentieth century was imagined by someone who had never used the technology he was describing, which may be precisely why the description captured something that engineers, too close to the material, could not see.