Contact: Gabrielle DeMarco
Friday, September 2, 2011
Tipping Point of Ideas
This work studies the dynamics of shifting opinions and the take home is that the build up to a ten percent consensus is the critical mass needed to implement a new idea. As someone who invents new and novel ideas as a matter of course, I have seen this in action. After all, I practice the strategy of distributing new ideas throughout this blog in the knowledge that as the readership expands; more convinced people will emerge to support some of those positions leading to further action.
As the blog itself becomes better known this process accelerates.
In time we get a crop of expanding interest nodes that we can nurture. In particular we have helped encourage the bio char revolution to the extent we are now seeing contacts flowing back into my own circle and I do not have to educate. It was one of my first enthusiasms that I wrote on.
Minority rules: Scientists discover tipping point for the spread of ideas
Public release date: 25-Jul-2011
Contact: Gabrielle DeMarco
In this visualization, we see the tipping point where minority opinion (shown in red) quickly becomes majority opinion. Over time, the minority opinion grows. Once the minority opinion reached 10...
"When the number of committed opinion holders is below 10 percent, there is no visible progress in the spread of ideas. It would literally take the amount of time comparable to the age of the universe for this size group to reach the majority," said SCNARC Director Boleslaw Szymanski, the Claire and Roland Schmitt Distinguished Professor at
"Once that number grows above 10 percent, the idea spreads like
As an example, the ongoing events in
appear to exhibit a similar process, according to Szymanski. "In those
countries, dictators who were in power for decades were suddenly overthrown in
just a few weeks." Egypt
The findings were published in the July 22, 2011, early online edition of the journal Physical Review E in an article titled "Social consensus through the influence of committed minorities."
An important aspect of the finding is that the percent of committed opinion holders required to shift majority opinion does not change significantly regardless of the type of network in which the opinion holders are working. In other words, the percentage of committed opinion holders required to influence a society remains at approximately 10 percent, regardless of how or where that opinion starts and spreads in the society.
To reach their conclusion, the scientists developed computer models of various types of social networks. One of the networks had each person connect to every other person in the network. The second model included certain individuals who were connected to a large number of people, making them opinion hubs or leaders. The final model gave every person in the model roughly the same number of connections. The initial state of each of the models was a sea of traditional-view holders. Each of these individuals held a view, but were also, importantly, open minded to other views.
Once the networks were built, the scientists then "sprinkled" in some true believers throughout each of the networks. These people were completely set in their views and unflappable in modifying those beliefs. As those true believers began to converse with those who held the traditional belief system, the tides gradually and then very abruptly began to shift.
"In general, people do not like to have an unpopular opinion and are always seeking to try locally to come to consensus. We set up this dynamic in each of our models," said SCNARC Research Associate and corresponding paper author Sameet Sreenivasan. To accomplish this, each of the individuals in the models "talked" to each other about their opinion. If the listener held the same opinions as the speaker, it reinforced the listener's belief. If the opinion was different, the listener considered it and moved on to talk to another person. If that person also held this new belief, the listener then adopted that belief.
"As agents of change start to convince more and more people, the situation begins to change," Sreenivasan said. "People begin to question their own views at first and then completely adopt the new view to spread it even further. If the true believers just influenced their neighbors, that wouldn't change anything within the larger system, as we saw with percentages less than 10."
The research has broad implications for understanding how opinion spreads. "There are clearly situations in which it helps to know how to efficiently spread some opinion or how to suppress a developing opinion," said Associate Professor of Physics and co-author of the paper Gyorgy Korniss. "Some examples might be the need to quickly convince a town to move before a hurricane or spread new information on the prevention of disease in a rural village."
The researchers are now looking for partners within the social sciences and other fields to compare their computational models to historical examples. They are also looking to study how the percentage might change when input into a model where the society is polarized. Instead of simply holding one traditional view, the society would instead hold two opposing viewpoints. An example of this polarization would be Democrat versus Republican.
The research was funded by the Army Research Laboratory (ARL) through SCNARC, part of the Network Science Collaborative Technology
(NS-CTA), the Army Research Office
(ARO), and the Office of Naval Research (ONR). Alliance
The research is part of a much larger body of work taking place under SCNARC at
Rensselaer. The center joins
researchers from a broad spectrum of fields – including sociology, physics,
computer science, and engineering – in exploring social cognitive networks. The
center studies the fundamentals of network structures and how those structures
are altered by technology. The goal of the center is to develop a deeper
understanding of networks and a firm scientific basis for the newly arising
field of network science. More information on the launch of SCNARC can be found
Szymanski, Sreenivasan, and Korniss were joined in the research by Professor of Mathematics Chjan Lim, and graduate students Jierui Xie (first author) and Weituo Zhang.