A lot of it feels an awful lot more like magic than science. Like the mind reading and prophecy stuff. The more interesting technology, personal shields, is just an excuse to explain why people fight with swords instead of modern weapons. Which lends to the medieval feel thing. And an awful lot of technology is missing, like anything remotely like a computer. The robot wars happened in the distant past and aren't part of the story. Just an explanation for why there aren't any computers. It's barely mentioned in the book at all actually.