"We live in the world, incorporated in a network, - so, at least, it is constantly repeated over and over again us. Visible embodiment of any network is a municipal area. A tower of town hall is a symbol of hierarchy, structure of traditional society, where casual co-operations are impossible. It appears on a check, that any hierarchy is a variety of network. Moreover, a network can regenerate in a hierarchy, and a hierarchy can fall under the onslaught of powerful network.British historian Ниал Фергюсон in a new book on vast material shows co-operating of networks and hierarchies with antiquity to our days. Networks, relating people, always mattered very much, but slipped out from attention of the historians concentrated on hierarchies. Two "network epochs violated centuries-old domination of hierarchy in the device of society. The first was begun with appearance of book-printing, second - with development of information technologies, appearance internet. Time of networks is this always time of revolutions, transformations, work, and also new dangers and calls, such as globalization, mass migrations, world terrorism, social and political polarization of society.