How to distinguish from a multitude of signals in a person's life are precisely those signals that have an indisputable significance for the life of a person. For one person, the fleeting glance of a stranger can change a lifetime. For another person, even the death of many people is not essential. Recently, there are scientific articles, the authors of which are trying to understand the system of ordering information in the human brain on the important and secondary. Please, get acquainted with scientific articles, and not with popular distortions of scientific data.