Remembering the Future

Last year I created a network map of political books based on purchase patterns from major web book retailers. The network revealed a divided populace... at least amongst book readers. . . . It appears that the many of the books have changed from last year but the pattern is the same. Two distinct clusters, with dense internal ties have emerged. These political books are preaching to the converted! This year we find more bridges between the clusters. Yet, this network of 67 books is dependent on just 2 nodes to remain connected -- Sleeping with the Devil and Bush at War.