In short, for humans, schizophrenia is short-range thinking.
We will continue to describe the schizophrenia of type XS1 A and B. This nonpathological form of schizophrenia can bring some big advantages to that person. Long-range models use a great amount of energy in order to be suitable to the changing external reality, and are also developed to find the best solution to problems. In a stable society, many such models are of little use, because the society imposes certain models, that need only be assimilated. This way, a person who has XS1 A or B will use the energy only to make better and better short-range models.
Thus, a stable and efficient society favorises the XS1 schizophrenia.
Let's see an important factor associated to the education system. The whole educational system is based on assimilation of external models and verfications of the assimilation of these models. The construction of new models is totally unfavored. Thus, the general education system favorizes the development of induced schizophrenia (XS1B). The effect is devastating for the society, if we take into account the consciousness issue. The theory defines consciousness as the capacity to build long-range models containing the person as an element. Thus, the educational system favorizes implicitly those who have a low-level consciousness.
The second main psychiatric illness is paranoia XP. Paranoia is defined as the inclusion of an ordinary model (OM) into PSM (OMPSM).
The basic characteristic of a model in PSM is its invariance. These models are practically impossible to be changed, whatever the information coming from external reality would be. When there is an OMPSM, all the models contained in the brain have to be in harmony with this invariant model as well.
When a new model is built, some information coming from external reality could be in contradiction with OMPSM. In this case, the only way to integrate the new information with the condition imposed by OMPSM is to distort the ZM which will intergrate that information. This is possible only on image models. On image models, there is no criteria to attribute to primary facts the correct importance. Thus the whole structure of models will be distorted in order to be harmonic with OMPSM (e.g. some facts will be minimalized and other exaggerated as importance).
This is why paranoia is to be understood as an illness, which affects personality. The personality in its whole is of paranoid type. The structure of models is or can be built partially harmonically; the associated symbolic models are built to be in accordance with the image models, and sometimes, the paranoid can have a brilliant harmonical and logical structure.
The detection of paranoia is very difficult, as the patients can have no logical contradiction in their thinking structure, and they can have a good coupling to the changing external reality.
Many paranoids are brilliant in thinking, with an infallible logic. The example of Hitler is eloquent. His OMPSM was 'the Arian race is a superior one'. What followed was based on logic. Communist personalities can be mentioned here as well. They had an OMPSM of the type 'the working class is the driving force of progress'.