1. The models are built chaotically. The structure of models, including PSM, contains important and less important models. This is also a problem of education in early childhood. 2. Education and assimilation of new knowledge continues to be based on a too large scale on [I] models. 3. The structure of models, including PSM, is almost invariant and, as a consequence, the brain has not the flexibility required by a fast evolution of the society. 4. Education is chaotic. Too many image models are built in the period of development, and the symbolic models are not adequate to reality. For instance, mathematical calculations are prefered to the construction and operation of general symbolic models. Even worse, the students are not taught to think based on symbolic models. Terms like image model (analog) and symbolic model are not known at the level of general formal education. Image models should be taught starting in first class, and symbolic models with eight class. Even worse, those who work with symbolic models are not always aware of it. Many physicists are not aware that Newton's Mechanics is a symbolic model. 5. The design deficiencies of the brain are not shown or recognised, and as such, can't be compensated for (see general theory). Conclusion: The brain evolves from image to symbolic models. The dispersion between the [S]-levels of people, countries and cultural zones is increasing. This increasing dispersion, together with the design and technological problems, creates fundamentalism (some can't continue their evolution). Fundamentalism is a threat for the world as a whole. The possible solutions are unacceptable within the frame of the democratic principles. ETA 12: The rattlesnake The rattlesnake produces a continuous strong sound when it is attacked or is attacking. It is also known that it has no hearing. MDT explains this attack and defense facility. The basic function of any brain (including animal) is to build automatically models based on the information from external reality. A repeated sound will activate continuously an image model, which will try to predict the occurence of any new sound. It is reminded that this hardware function is active, and maintained active automatically, by any brain. There is no possibility to ignore, or not hear these sounds. The sound produced by the rattlesnake will activate repeatedly (hundreds of times in a second) a sound receiving model at the animals around. These animals will use a lot of energy to update the model. Thus, the animals will have difficulties to build and activate a model, either for attack or defense. The phenomenon is the same for humans. The sounds Ðrepeated or not- diminish our capacity to do any intense intellectual activity. ETA 13: The main psychiatric illnesses: paranoia and schizophrenia The terms paranoia and schizophrenia have no definition in psychiatry. They have only descriptions. MDT is able to generate normal definition for these deficiences.