Science fiction is a genre through which we have repeatedly seen how powerful human thought is and how the technologies of the future become our present. In 2022, liters and JSC "ZASLON" held a literary competition, in which the authors reflected on how ordinary engineers, because of the technologies they developed, can change their lives overnight, how original ideas come to them and how they develop their creations. The best stories were chosen by Sergei Lukyanenko, Vadim Panov, Andrey Vasiliev and Max Glebov, modern popular science fiction writers. This collection contains the winners' stories about the invisible scientific and technological alternatives that exist with us every day. Bonus - a story from a jury member, Max Glebov.