Example: Microprocessors (the central part of a computer) have been invented in USA. At that time there was a tendency all over the world to produce or reproduce such microprocessors. The first microprocessor was called 8080. It was upgraded to 80286. These microprocessors were reproduced in Europe, former USSR and Japan. 80386 followed, which was reproduced with great difficulties, but starting with 80486 the tendency to reproduce such devices was extremely low. Presently there are two families of microprocessors, both designed and produced in USA. This is interpreted by MDT as a danger of a break between the most advanced in the domain of symbolic models, and the slighly less advanced ones (make your own comparison with the automobile industry). Even the advanced cultural zones (Europe, Russia, Japan) make big efforts to keep the contact with the most advanced (USA), but the danger of a break exists here as well. The fundamentalist reactions of the individuals, nations or even cultural zones are a great danger for human civilisation. If the fraction of fundamentalists will increase too much, then, at the limit, two things might happen: 1. The world will fragment into nations/ cultural regions which can maintain the rhythm of assimilation and development of symbolic models, and nations/cultural regions which will return to image models (fundamentalist reaction) 2. The same type of break will appear inside a nation/ cultural region. The evolution shown at no.1, pushed to extreme, could generate terrorism, and the one at 2 already generates 'escape' movements towards religions, antiglobalisation, ecology etc. ETA 10: Terrorism The evolution of society leads, for some nations, to an incapacity of further development based on symbolic models. These nations feel that the world is going towards something they can't follow and understand. The solution for them is to adhere to an invariant or universally accepted model, like a religion or a nature/tradition conservation movement, to orient their activity, and to offer them an easily understandable and attainable goal in predictible time (fundamentalist reaction). Some individuals, who have strong fundamentalist reactions, could try to modify the society by direct action. A class of such reactions is terrorism. The definition for terrorism considered here is: terrorism is an antisocial phenomenon, which implies attacking some persons without an explicit reason. It also means destruction of material goods without explicit reasons, when these goods do not belong to a state.