Was it necessary to catch itself you on that you give out desired for actual, defend ideas in that believe, and ward off those in that disbelieve? If it so, then to you, as well as many, thinking of soldier is peculiar. But to accept correct decisions, it is needed to train thinking of secret service agent. A secret service agent is not given up in a fight. He goes out, examines territory and returns with exact data. His primary objective - to know truth.People intellectual as secret service agents more often accept correct decisions not because they more clever than other or know anymore. Simply they are armed with habits and certain skills, that, however, everybody can master. This book for all, who would like to know, as it can be done.In Russian language published first.