“I was actually able to write Neuromancer because I didn’t know anything about computers,” he says. “I knew literally nothing. What I did was deconstruct the poetics of the language of people who were already working in the field. I’d stand in the hotel bar at the Seattle science fiction convention listening to these guys who were the first computer programmers I ever saw talk about their work. I had no idea what they were talking about, but that was the first time that I ever heard the word ‘interface’ used as a verb. And I swooned. Wow, that’s a verb. Seriously, poetically that was wonderful. “So I was listening to it as an English honours student. I would take it back out, deconstruct it poetically, and build a world from those bricks. Consequently there are other things in Neuromancer that make no sense. When the going gets really tough in cyberspace, what does Case do? He sends out for a modem. He does! He says: ‘Get me a modem! I’m in deep shit!’ I didn’t know what one was, but I had just heard the word. And I thought: man, it’s sexy.”
https://www.theguardian.com/books/2020/jan/11/william-gibson...
His other inspiration for cyberspace is presciently metaverse-like:
The idea came to him from watching kids playing arcade games – "it seemed to me that what they wanted was to be inside the games, within the notional space of the machine" – and an advertisement at a bus stop for Apple computers. "Everyone is going to have one of these, I thought, and everyone is going to want to live inside them. And somehow I knew that the notional space behind all of the computer screens would be one single universe."
https://www.theguardian.com/books/2011/sep/22/william-gibson...
Neuromancer is not supposed to be a manual on navigating real-life computer networks.
It's science fiction. Readers are expected to suspend disbelief.
I still love his vision.