Scifi can deliver an illusion of understanding. A metaphorical description of something very strange that the reader never actually experienced firsthand. That

Scifi can deliver an illusion of understanding. A metaphorical description of something very strange that the reader never actually experienced firsthand. That's a deep kind of dream. Not saying the vision is entirely invalid, but maybe it isn't as intimate an understanding as the reader thinks. It's a bit like religious literature that way.