The book expresses the conviction that "the art of creating tools - "Greek" techne - "changes its character" "together with the change of civilization epochs and co-determines such changes. This does not mean that tools typical for a civilization epoch determine it completely, but they change our way of perceiving and interpreting the world. There might have been many such epochs in the history of human civilization (much more than the "three waves "of agricultural, industrial and information civilization). This is expressed by the title "Technen "of the book, where "n "denotes a...