On the title page of the "paper books" edition you read "A classic tale of escape and survival...". That phrase is at least deceptive. This book is far more than a "classic tale", and although both fled the danger of internment during WW2, "escape" is not really the main theme. Neither is "survival", because as strange as it may appear, they often had too much to eat in that desert, even if they spent a few hungry weeks during an exceptionally long lasting drought. The real value of this book lies in the abundance of biological, zoological, geological, meteorological and social observations in one of the most arid places of the world. You will learn an incredible amount of details about animals, plants, insects... and meteorology that no one ever witnessed. But there is also the philosophical exchange between the two men, who initially only start debating to avoid mental depletion. Their observations, their daily life, and in particular their amazingly rapid mental conversion from 20th century scientists to stone age hunters, lead to very interesting ideas that are convincingly developed. This book is a pearl for all open minds.