Life is rapidly running away, there is very little time left, and so many topics have not yet been covered. And so Gurevich writes this story, warning the reader that there will be no completed plots here, these are only sketches for them, themes for future works, and invites for cooperation , joint creativity, hoping for worthy successors. This is where you can unleash your imagination to the fullest extent, turn on your imagination to the fullest and think together with the teacher about problems and their possible resolution. And there are a lot of them, they have gathered on a whole tree, and they scatter in all directions and release side ideas and storylines, and one person does not have enough strength and time to write all this. If you are ready not just to read, but to think about what is written, if you are happy you fill the skeleton of an idea with the meat of details - feel free to read this book, and it will not deceive you.