To be honest, this is a long reading, the author substantially describe the network between the people, how the built their network? How they rationally use their network to do somethings etc.

The autour use this figure to show the circles of network between different people. The weak ties play crucial role which is similar with a bridge to communicate with the outside world. “Often our close friends can offer us in finding job. They move in the same circles we do and are inevitably exposed to same information. To get new information, we have to activate our weak ties.” (Barabási 2002)

In other worlds, the whole world can be divided to different separate circles, we may relate to others by various of ties, if we can rationally utilize those ties, we may get more information even helps from others. However, one of the basic thing we can not forget that  is be kind and be genuine to others.

Barabási, Albert-László 2002. Linked: The New Science of Networks. Cambridge (MA): Perseus