Is Fantasy Sci-Fi?

When I met the man I would later marry we were both in college. He loaned me his copy of Dune over the Christmas vacation; I suspect he wanted to make sure I'd see him again, if only to return the book. Dune is a great science fiction novel. We both loved the sense of working out how the planet's ecology could evolve, and imagining the mysteries of space travel. But my soon-to-be-husband was much more tied to the science while I loved the characters, the mind-reading, future-sensing aspects o...