To be successful, you need to be able to see ways and make decisions. Then any problem can appear in a new light, opening up unusual opportunities. The young scientist learned this from his own experience. Having headed the department of bioarchitectural materials, Bogdan had no idea what path he was taking. He thought that he would only become a continuator of promising research. But it turned out that he found himself on a completely untrodden path. Solving problems, the bioengineer was faced with a choice: spend years in research with no guarantee of success, or take an innovative approach, combining biology with the latest psychology. But he is developing building materials based on mycelium. What does psychology have to do with it? And how can he then present his work to his colleagues? You will learn the answers to these questions from the science fiction story by Zorislav Yartsev. You will also read many unusual facts about mushrooms, the prospects for their use in architecture and the amazing secrets of modern psychology that can change the world.