Because it helps people understand what a ‘news graph’ might be. If you can imagine your facebook connections as a graph, with your friends and friends of friends as nodes and with all their relatonships, of whatever kinds, as edges, you can maybe begin to think about the news within the same architecture.
What if we had a picture of the news, a graph of the news, with the people in it as nodes and the issues, stories, and controversies that relate those people to one another as edges? Is that possible? How would that work?
Of course, I think I know. It involves, oh, the future of news. It would be networked news. Ha!