About the book: 2021 / When a person is in a hurry somewhere, he may not notice many minor details. For example, that in a carriage that had just been packed with people, it became much more spacious than before, at one of the busy metro stations there were not so many people, and the cashier and the police, who are usually always present at the entrance and exit, were completely absent. And a person notices that something is wrong only when something really went wrong. For example, turning to the exit from a metro station, a person again finds himself on the platform. It's strange isn't it?