By profession, he is a mirologist, forester, owner and, concurrently, the only official inhabitant of a certain scientific station in one person. He inherited this unusual profession from his father, who in turn received it from the Tenant's grandfather. The work of a mirologist is to study the world in general in all possible ways, as well as to constantly monitor and document the current state of the Earth — checking the condition of the soil, air, and living organisms.