Category: Science

He explains the basic history of network theory, and then shows how his own work has turned it into a closer model of reality, a model that most of us will recognize. Networks are all around us, and they are simply not random. Some of our friends, for instance, are loners, while others seem to know everyone in town. Some websites, like Google and Amazon, we just cannot avoid clicking on or being referred to, but many others are obscure and you could only find them if someone sent you their addresses. Barabási calls these ‘nodes’ with such an extraordinary number of links ‘hubs,’ and he and his students have found laws of networks with hubs, showing such things as how they can continue to function if random nodes are eliminated but they fragment if the hubs are hit. Barabási is currently doing research to show what intracellular proteins interact with other proteins, and true to form, some of them are hubs of reactions with lots of others. Finding the hubs of cancerous cells, for instance, and developing ways of taking them out, show enormous promise in the fight against cancer.