Sci-Fi - a convenient way to introduce a version for when it is not enough evidence. Therefore, the novel Strugatsky brothers "Inhabited Island " takes place in the distant future on the planet Saraksh whose inhabitants earthlings try to help move along the path of progress. Meanwhile, now the connection of ancient legends and the analysis of ancient artifacts and modern scientific knowledge can gain enough evidence to show that from ancient times, humanity is not leading and trailing participant in the process of interaction between civilizations at different levels of development. "Inhabited Island " - not at all strange and distant planet of the future, but our Earth. And this book is no longer a fantasy novel, but only the analysis of real facts and witnesses.