It's often overlooked that PK Dick was only moderately successful during his lifetime, which, in hindsight, is quite hard to believe. The Man in the High Castle, being one of his few mainstream novels, presents a classic "What If?" scenario. It explores what would have happened had the Nazis won WWII. But, as with all of Dick's novels, he features the lives of the ordinary, the very people affected by this dilemma. It's intelligent, focused, and very very verrrrry real ... apart from the rocket ships! But this is from a sci-fi master after all, so we'll forgive him his eccentricities. This book is about as real as it gets.