The concept of this book is so appealing to me, and the photographs are definitely beautiful; I found myself wishing a few times that they had pushed a little harder for diversity in subject matter, but that's just a personal bias, not their problem. The book is still lovely. I would have been interested in the background behind more of the photos, too. My big complaint is that I wish the book design had included equally-sized diptychs for each day; the small photos made it difficult to achieve the same effect as the larger ones.
But overall, what a wonderful idea. Right up my alley : )