I really enjoyed this. This book would be a great resource for people who want their science fiction to be as accurate as possible (that is, they don't want, like, Neil deGrasse Tyson to @ them on Twitter telling them how Very Wrong they are). I liked how the book was arranged topically, and covered just about anything that one might write about in a scifi novel, whether it's zombies, or fancy computers, or interdimensional travel. It gives science information but is pretty easy to read, so even while it's explaining some scientific concepts that can be pretty esoteric, the explanations are written in a style that readers can understand, even if they're not scientists. I would definitely recommend this resource to anyone looking to write a novel where knowing some sciency stuff might come in handy.