In 2021, when the world is basically ruled by corporate Japan, humans with microchip brain implants are used to transport the most important of data files. Computer networks are unsafe, because people can "jack in" and neo-physically enter the complex world of cyberspace, where a computer virus won't just knock out your computer, it'll kill you outright.
This is the world of writer William Gibson, and it seems like a pretty interesting place to visit. It's unfortunate that Johnny Mnemonic does very little in this setting and comes off as little more than a remake of Tron, without the lightcycle sequence.
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