It's funny how things work out. It has been less than a decade since I stared down that long corridor at Cornell, wondering why I'd moved halfway around the planet to come study some obscure subject in a place that all of a sudden looked like a prison. Yet in that brief time, the world has changed several times over, and my world with it. Surprised by the meteoric rise of the Internet, stung by a series of financial crises from Asia to Latin America, and stunned by ethnic violence and terrorism from Africa to New York, the world has learned the hard way that it is connected in a manner few people had anticipated and no one understood.
- From Six Degrees: The Science of a Connected Age by Duncan C. Watts