This theory was proposed by British anthropologist Robin Dunbar, research professor of evolutionary anthropology at Oxford University. Dunbar, in 1992, observed a correlation was used to nonhuman primates in order to determine the size of social groups of humans, where predicted a group of 147.8, usually represented as 150. Still, Robin Dunbar was not considered accurate because it is related to the volume of brain Neocortex. Also suggests a difference in the rate of social group size according to species, established by the differential volume of neocortex.

From this experience, made a comparison with observable human groups. Looking into the anthropological and ethnographic literature, conducted a census on the size of social groups within nomadic societies where it determined that the groups were classified into three categories, 30 to 50, 100 to 200 and 500 to 2500 . His research on the social dimension of the tribes seem closer to the prediction, where the size was a Neolithic settlement is approximately 150 people. 150 also sets the point of excision of a settlement huterita. In the military context, establishes the basic size of a professional military unit in ancient Rome and on the contemporaneous times since the sixteenth century. As approximation, 200 members are the maximum allowed in an sub-specialization of academic discipline. Dunbar theorized about this vision that a group size of 150 people, he needed a very high incentive to maintain the union, speculating that at least 42% of the time the group was engaged in sociability, where the language is primarily developed to limit the amount of time. Moreover, argues that the language is an effective device for maintaining social relations, as animals generate more physical activity to keep them, against the social productivity, and that not only is the limit of stable relationships that a person be maintained, but may indicate the limit of people who can become an organic group without a stable pyramidal structure of authority. In the words of Dunbar:

"… there is a cognitive limit to the number of individuals with whom any one person can maintain stable relationships, that this limit is a direct function of relative neocortex size, and that this in turn limits group size"

Dunbar, R. I. M. (1993). Coevolution of neocortical size, group size and language in humans. Behavioral and Brain Sciences 16 (4): 681-735.

Wherefore now an application in the management of social policies, such as socialism, fascism and other centralized ideologies, they can operate properly on a small scale, but the when grown index of population, the social cohesion problems arise because of the difficulty maintain adequately controlled relationships between individuals. The number of Dunbar's theory is applicable to problems of overpopulation, due to the remoteness of the social group average of 150 hypothetical system in any delimited, for example a city, increasing the likelihood of emergence of conflict, which would nowadays, environmental pollution, disorder public, discrimination or criminal acts or criminal.

The number of Dunbar has been studied by anthropologists as a hot topic, to applying theories in marketing and social networking, to study groups of people in virtual worlds and social spaces created electronically. A clear example is social networks like Facebook, Tuenti or other similar characteristics, which provides a significant increase in the number of Dunbar that breaks the direct relationship and the physical process of interaction.

Cameron Barlow, a sociologist who researches on relations within Facebook, confirms the theory of number Dunbar in their application to social networks, which states that Facebook users communicate regularly with only a small core of your friends list . Robin Dunbar himself was revised his theory by applying it on Facebook, in a study to be published later this year where he compared the traffic of thousands of people who are friends with others who have hundreds or less without find a substantial difference between them, thereby confirming his theory, with Barlow, that the brain can not expand their capacity to have meaningful relationships with more people, even within the virtual world. The results of Durban showed a clear diference by gender, where women were better than men to maintain virtual relationships. For them easier to maintain a relationship just talking with friends, while men show a greater need for physical interaction.

On the other hand, the media are built on a strong foundation supported by marketing and advertising, with the ability to create new trends and fashions, including new cultures (subcultures) that produce large changes in the forms of social behavior, with the ability to generate a transversal which is fed from different sources of knowledge. Similarly, the study of media is confronting different disciplines that are interwoven in a complex way between communication sciences, computer engineering and telematics, social sciences, fine arts, business studies political science.

Well it is a process of interdisciplinary study with a strong dose of creativity, where it is necessary to place each of the actors in their specific role, thus opening an overview of the different ideas able to build the concept of average. Some good ingredients for a delicious roast.

A fragment of an article I read years ago when I began to study anthropology.

“Suppose that we were not studying in broadcasting transmissions and society in America in the mid-twentieth century, but the opera and society in Italy in mid-nineteenth century. After all, the opera was in Italy during that period, a mass communication medium. What would we be studying?”

Uses of Mass Communication by the Individual, in W.Ph. Davison/F.T.C. Yu, Mass Communication Research, Praeger Publisher, New York, 1974.

The study titled Asessment Criteria for Media Literacy Levels, was designed by Communication and Education at the UAB and directed by Professor José Pérez Tornero. This examines 27 countries where the level of media literacy, the ability of citizens to measure the use of technologies and media, indicating that these low levels of media literacy, establishes a major difficulty for economic development and cultural whole of Spanish society.

These studies appear in several proposals in order to encourage media literacy, echoing efforts in promoting and implementing in the field of education policy, seeking new forms of curriculum innovation, improve public services and provide audiovisual families access to the information society. For their part, the european states should devote more attention to develop the critical sense of their citizens to deepen and enhance active citizenship and participative democracy.

This coming Wednesday, 13 January, the project Breakout: Escape from the office will continue its third edition in the former Fabra & Coats factory, located in the district of Sant Andreu in Barcelona. This edition wants to concentrate on creative professionals from various sectors, especially from the fields of culture, artistic production, architecture and design.

The framework could not be more appropriate. The old Fabra & Coats factory is in the process of remodeling, with the aim of becoming a facility within the neighborhood context of factories created spaces to accommodate the creative and artistic city of Barcelona.

The Project Breakout was born last year in New York, as a movement to rethink the use of public space and new models of work and collaboration. The Citilab-Cornella joined the initiative, held its first edition in Cornella and the second last November at L'Illa Diagonal, where he finished as a way of consolidating new uses of public spaces.

A meeting where we met a few friends. Ramon Roca from Guifinet and Paco Fernández from ABLA, a small village of 1,500 inhabitants in Almeria has a Living lab that connecting the people. Not They have building or work place. But agreed to find the time for discusion and process innovation that allows the benefit of social welfare, taking a practice so interesting as a "coffee of ideas". Every day host a discussion, where people can go and explain their ideas, learn from each other and to exchange knowledge and experiences on the daily life of the village.

The Estage was the beginning of the Pirene Lab project, a point for the discussion moved to other platforms in a network. The seed is planted in the mountain and began to take root with the help of CitiLab, within a very complex ecosystem that want to be sustainable.

The distribution of color, came out of choose the order of candidates speeches TV does for just over a week, the representative of Ahmadineyad extracted the ball from the red and the green ball the representative Mousavi. Since then, the campaign has been impregnated color. On the Internet, the symbolic appropriation by the young has been vigorously with on display photo montages colored green and the girls with their nails painted green and covered with a same color scarf. Accompanied with techno background music very powerful.

All this after a censure by the Iranian authorities, who banned access to Facebook, for reproach for a few days later. According to Iranian news agency IRNA, the ban was "because the followers of Mir Hossein Mousavi candidate had been able to use Facebook to increase awareness of the candidate's positions." The reformer candidate had passed the 5000 friends at that time. It also has a profile on Flickr, with nearly a thousand photos that show the fury of the people regarding the elections and another on Twitter.

From this chromatic symbolism, the blue was the color of their supporters to boycott the elections. Remember the war of colors that lived in the Orange Revolution in Ukraine and the Rose Revolution in Georgia

With Web 2.0, the media has adapted quickly to a whole new set of formats, on blogs and video network provides a way to quickly access the information. Newspapers and periodicals have their own portal to the network, which allows reporters more information and facilitate very fast facts of the news. With the addition of video, news writing is complemented with images, creating a hybrid between the written press and television.

Although the role of the press have created a place in the digital environment, many other media have been born thanks to the Internet. Vilaweb is the first English newspaper on line, born in May 1996 as a news portal. With local editions represent a handful of Catalan cities, created from the demand of people and different groups of people who wanted to replicate the model Vilaweb in their city. Even a local release in Australia, sponsored by the Catalans living in Melbourne.

This change has led many journalists to incorporate the tools of the Internet 2.0 in their work. Many use the blog or wiki to publish the news and most relevant information, even when it occurs. Karma Peiró is one of the Catalan journalists used the blog as a tool of communication, following events in-house, and the reports from your laptop wherever there is news for half of his blog. This weekend has been following closely the various papers in InnovaCamp Mediterrania, hanging all the information minute by minute to block their Stories from a Digital Journalist.

Wikidiario is a citizen journalism project aimed at enhancing the participation of users in the construction of information, half of the tools of Web 2.0, inviting them to make contributions of any topic that may be of interest, enhancing information proximity to any geographical area. This process produces a good combination of participation and quality of information, where citizens provide relevant information, which will be subsequently validated and consolidated by journalists. With the collaboration of the Universitat Autònoma de Barcelona and la Universidad Autónoma de México.

Although little has to do the mountain bike with internet, because it was developed in the early 70s, this is an example that shows that innovation is more likely in a process of collective creation that individual. In Catalonia, a recovery of popular memory, has been a activity from the need of the inhabitants of the Conca de Barbera to recover his past. The Arxiu Virtual de la Memòria Local de la Conca de Barbera comes as an innovative idea that allows for interaction and participation of their users, creating the videos. Today also starts the BDigital Congress Barcelona, where the project is selected by Awards of Barcelona Knowledge City .

To facilitate and learn about the processes of innovation, is being held this weekend in InnovaCamp Mediterranea Congress on Citilab Cornellà. This environment is key to debate on innovation and creativity in Catalonia, where meting the most innovative people of our country.

Before long, we've gone from static websites where the user was an simple observer toward dynamic websites, collaborative and participatory, where people become active, create content, and opinion and relations. This new website is called web 2.0 or social web.

Blogs are personal websites of internet users, a format that has revolutionized the schemas for published on the net. The site content are created by the users, which published articles and comments on their experiences, interests and skills and professional individuals. The links from the blog has created the blogesfera, the entire set of blogs, although more than that, the blogosphere is also a set of relationships between people who are behind the blogs, constitute a system of social relations. Blogs allow internet publish any information created with text, images and video.