origin in Russian Epigraph: The little son came to his father and asked the little one: - That means good and what means bad? Preface: This work is not presented in the form of a lecture, but rather a summary of the lecture, a sketch, an outline. This work contains theses that should be used as hyperlinks. The information is provided in a compressed form, which requires additional time to decrypt, so I recommend reading slowly. And even better, re-read it several times, but not in a row, but after a certain period of time...