Steven Johnson reports on new software that analyzes your email and figures out your social network.
No doubt you've experienced these two types of networks in your own life, many times over. The karass is that group of friends from college who have helped one another's careers in a hundred subtle ways over the years; the granfalloon is the marketing department at your firm, where everyone has a meticulously defined place on the org chart but nothing ever gets done. When you find yourself in a karass, it's an intuitive, unplanned experience. Getting into a granfalloon, on the other hand, usually involves showing two forms of ID.
For most of the past 50 years, computers have been on the side of the granfalloons, good at maintaining bureaucratic structures and blind to more nuanced social interactions. But a new kind of software called social-network mapping promises to change all that. Instead of polishing up the org chart, the new social maps are designed to locate karasses wherever they emerge. Mapping social networks turns out to be one of those computational problems — like factoring pi out to a hundred decimal points or rendering complex light patterns on a 3-D shape — that computers can do effortlessly if you give them the right data.
