Homework : Babarasi

1. What is the principle of six degrees of separation? What number of social links does any one person need to be connected to global society? p. 30
The principle of six degrees is that it can easily be navigated by following social links from one person to another.
One person needs only five people and six links to be connected to another person.

2. How is the fabric of society today different from pre-internet society? p. 31
People became to share their knowledge with other people on network by a few click of links.

3. How many more links separate any pair of web pages compared to people in society? What can explain the difference? p. 34
There are 13 more links in web pages.

4. So far, what ranges of separation have network scientists discovered in different kinds of networks? p. 34
There are two ranges for food webs, three ranges for molecules in the cell, four to six ranges for scientists in different fields of science and fourteen ranges for neurons in the brain of the C. elegans worm.

5. What does research suggest about the fundamentals of networks? p.34-35
There should be more links to make the network's world smaller to connect each other.

6. What is your estimate of your personal number of connections to society? What connections are your strongest?
I think I need more than six degrees because I do not have much acquaintance so it is difficult to be connected to a lot of people in the world. I think it can be close to six degrees when I become more old.