All about friendship, scientifically speaking. Part II

Facebook and Twitter are currently the main social networks, have 2117 and 1500 million monthly visits respectively; These networks have helped many people to keep in touch, to be able to follow their idols or even make new friends, in 2009 a study was published in the Economist in which the number of people we interacted with on Facebook was analyzed. average, the result was that of the 350 friends we have on average, we only interact frequently with 9.

In 2011 Facebook conducted another study with all active users of your page at that time, which represented about 10 percent of the world's population and analyzed the set of friends in common, to get the average of how many links there are between any user and another one excluding celebrities and celebrities, the results showed that 99.6 percent of the world's users are connected only by 4.75 friends on average, this is today's most important test of the "theory of six degrees of separation ", a hypothesis that tries to prove that any person on the planet is separated by only five people from any other person is to say that between two people, there are only five intermediaries.

This is something that is represented in the popular phrase the world is a handkerchief, following this theory the friend of the friend of the friend of the friend of your friend, is my friend; The experiment of the small world was a small investigation carried out, by this Stanley Milgram who showed that human societies have interconnections much shorter than expected.

The experiment consisted of sending packages to randomly chosen people living in the US cities of Omaha and Wichita. These people received information about the purpose of the experiment and they were asked to send in this package to a randomly selected person who lived in Boston, a very short city, both geographically, and socially, in the most likely case that the person did not know the recipient personally, the person had to think of a friend or relative they knew personally and who was more likely to know personally To the recipient, the first person had to enter his name in the list and forward the package to the second person and so on, until the package arrived at its destination, in this way when the packages arrived at the scene the researchers had a list, with all the people through whom the package had passed, ie the number of the intermediary Even though there were people who refused to do the experiment, many packages arrived at their destination and the average number of people through whom the package had passed was 6, this represents a proof of the "theory of the six degrees of separation 'although Stanley Milgram never used this term.

Currently human societies are very integrated with each other and it is something that deserves some merit, because on this planet there are more than seven billion people, but with so many people there may be someone identical to you, although it is very difficult to prove it due to the complexity of human populations, the photographer François Brunelle, has devoted the last 17 years of his life to find pairs of people who despite having no family ties are practically identical, during his search he has noticed that in most of the cases couples live close to each other, so it is very likely that somewhere in the world and much closer to what you think there is someone practically the same as you; but if you want to find your double you will have to meet a lot of people, because how many people we can get to know.

Well, if we take into account that we live 78.3 years on average and that we remember faces after 5 years and we assume that we interact with three new people every day, and that a year lasts 365 days, we know 80 thousand people in our life.

But what would happen if a person raises will be known to all humanity if it arises to know as many people as possible; well that person if we suppose that he had certain facilities to know people; for example, that people go to him and if we calculate approximately that this person could receive people for about 15 hours each day and we take into account that it takes about 5 seconds to meet someone, well, that is, to shake hands; this person would take more than 1157 years to know all of humanity; so it's physically impossible to know everyone.

But right now how many people know you? because if we take into account the number of dunbar and we add the average number of people we know at work, more relatives, out that approximately you know 189 people crazy is not bad, we have seen that it is impossible to know all humanity, you can do something else, you can do something so that many more people know you can be a writer, you can make a book, you can be a doctor, you can be a scientist, you can be a singer, you can be a politician, you can try to change the world, you can do whatever you like and want people to remember you, it will make people remember what you did, because we are all going to die some day, but we can make our legacy endure in the memory of others, it is in your hands.