I read this one a while ago but since it's the flagship of my instance, I can't exactly ignore it ^^ This book is one of the few I read that offered a credible example of a world without capitalism. Sure, it's fiction, but the world it describes is credible, believable. It's certainly not perfect, Le Guin makes it clear, but it's enough to make one stop and think about our world. Undoubtedly, this book left a lasting impression on me.