Abstract
I would like to start this paper with one memory. In 1970, when I completed my dissertation, L. S. Tsvetkova, my scientific adviser, decided to show the manuscript to Alexander Romanovich Luria. He made a single correction: in one place, concerning the detailed development of neuropsychological principles, he crossed out his name and wrote "L. S. Vygotsky." Because I had mentioned the elaboration of those principles in detail, I found it more appropriate to mention Luria's name; however, Luria had a different opinion on this issue. Being a young, resolute author, I put both names in the manuscript.