I grew up on science fiction. And while we don't have flying cars or jetpacks, science fiction is a great way to look at the world. A great deal of science fiction follows the basic premise of "Here's an idea, now let's see what happens when we explore it."
This is very similar to what Elon Musk refers to as "thinking from first principles".
I just finished reading Ben Bova's New Frontiers, a collection of short stories by one of the Masters of Science Fiction. The great thing about science fiction short stories is you get to explore a dozen new ideas in a single novel's worth of pages.
Science fiction allows us to imagine worlds that could be, opens us up to prospects that are still in the realm of possibility. If you want to open yourself up to fresh ideas, out of the box thinking, Science Fiction is not a bad place to start. And, it turns out, many of the worlds geeks that are busy inventing the future grew up on it, so reading Science Fiction might just give you a glimpse into the future they're working hard to build.