About the book: 2020 / Everything in the world leaves its traces. The most obvious confirmation of this is that genetic information is transmitted to a person from all ancestors without exception. Every, even the smallest, event in life, every movement, thought and even emotion is a signal into space, leaving its own unique mark. Together, these signals change both the person himself and the environment every moment - even if no one can notice, understand, read or feel it. But what if you still try to find out what and how happened at a certain moment in the past? Meet again your own or someone else’s special hour, day. In details and details, with smells and emotions. Repeat everything again, relive it. Yours or someone else's. After all, if traces remain - physical, chemical, biological - then hypothetically it is possible to somehow measure them. And if they can be measured and described, then it will be possible someday to synthesize and reproduce them! And return everything. Even love!