This book contains a symbolic model associated to the basic function of
the brain.
A symbolic model is a model based on logic only. So, this book is not
recommended to individuals who has the tendency to understand the
external reality based on imagination.
The book can be understand by persons between 12 and 20 years old who
have special abilities in the field of positive sciences.
Also, the book is recommended to persons who already work in the field
of positive sciences (mathematicians, phisicists, engineers and so on).