This is engineering fiction at its best. Astronaut Mark Watney is left for dead on Mars with no communications array and no escape vehicle in an aborted NASA mission. Have you ever wondered what it would be like if your very survival depended on working through that problem set? It turns the calculations into high adventure! This is a fun and smart read about technology and the psychology of human survival. Apparently this is now a major motion picture, but who has time for movies?