This sense of family as a unit that continues through time is stronger among people who have a livelihood to pass down, such as farmers, merchants, owners of small companies, and physicians, than among urban salary and wage earners. Anthropologist Jane M. Bachnik noted the continued emphasis on continuity in the rural families she studied. Uchi (here, the contemporary family) were considered the living members of an ie, which had no formal existence. Yet, in each generation, there occurred a sorting of members into permanent and temporary members, defining different levels of uchi.