Social Networks

Here's a quote from physician and sociologist Nicholas A. Christakis, a Professor at Harvard University with joint appointments in the Departments of Health Care Policy, Sociology, and Medicine:

”It is customary to think about fashions in things like clothes or music as spreading in a social network. But it turns out that all kinds of things, many of them quite unexpected, can flow through social networks, and this process obeys certain rules we are seeking to discover. We’ve been investigating the spread of obesity through a network, the spread of smoking cessation through a network, the spread of happiness through a network, the spread of loneliness through a network, the spread of altruism through a network.”

Scroll down to the video: Social Networks Are Like the Eye