If you buy this book merely for interest's sake, you will be surprised at the entertaining and personable style of Thayer's writing: he brings wonderful insight and stories to make the read interesting.
If you buy this book merely for entertainment (which is frankly quite unlikely), you will be surprised at the depth of knowledge and experience that Thayer brings to his narratives.
A perfect mix of facts and anecdotes, Thayer presents something infinitely better than book knowledge: refined personal experience. You will likely be very impressed with this book. I have heard similar praise for his other book, Forager's Harvest.