Posted August 23rd, 2011 by Suzy

Today, the term social network has shifted to the Internet by creating projects such as MySpace and MoiKrug. However, the social network has a very long time. On the model of social networking on the Internet can good understanding of how they work and in life. The main objective of any social network – a connection that you can get in it. Thus, the social network may have multiple rings of bonds: The first ring – these are the people with that you are personally familiar. The second ring – these are the people with whom you do not personally know you, but know them by those with whom you are personally familiar. That is, it is familiar to people from the first ring. The third ring – familiar people from the second ring and so on.

Besides dating these increases in geometric progression. That is, if you have 3 other, in the first ring you have only 3 people. Do your three friends are also three friends each. That is, in the second ring you have 3 * 3 = 9 people. In this scenario, the third ring you will have 3 * 3 * 3 = 81.

And so on. On average, each person about 200 people in the first ring. It turns out that in the third ring will be 200 * 200 * 200 = 8000000. They say that if we take the familiar in the fifth ring, then you'll know every person on the planet.

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