In "The Hidden History of mankind" Michael Cremo and Richard Thompson lead startling data, which the scientific community was once informed. For a long time this information was out of sight of scientists because of the so-called "knowledge filtration". The essence is to ensure that modern man has existed on Earth for millions of years. To extract the data to the light of day, the authors had to do an enormous amount of research and analysis, the results of which are impressive as are set out in such detail that even so worthy of close attention. This work meant a wider audience. We also hope that it will attract attention and open-minded specialists.