Any sufficiently advanced technology is indistinguishable from magic.
In 1983, I was lucky enough to lead the team that turned one of his novels into a computer game, the first time science fiction authors had worked in that medium. His computer game ended up grossing more than most of his books ever did.
He really was a genius.
The most important thing you can take away: Naming things is important. He made magic things real by describing them and talking about them in ways that felt real. Once something feels real, making it real is a lot easier.