In the seventeenth century there was not a lot of things. There were no cars, radio, television, diesel-electric ships, amphibious aircraft or thermoelectric stations. However, this is not scary, say Nikolai Meshchersky, Mikhail Anisimov and Sasha Popadnets. If you need it, everything will be there. They have both hands and heads. And there were no member carriers with flashing lights, effective managers with exorbitant salaries and servants of the people living in mansions, which they could only save up for from their official income in perhaps a hundred years. The heroes of this book will make every effort to ensure that nothing like this ever appears - at least in their country.