“…As for the inherent relationships characterizing populations, both internally and externally, I suggest that four key types stand out, as informed by the ecosocial theory of disease distribution (Krieger 1994(Krieger , 2001(Krieger , 2011; the collaborative writing of Niles Eldredge, an evolutionary biologist, and Marjorie Grene, a philosopher of biology (Eldredge and Grene 1992); as well as works from political sociology, political ecology, and political geography (Biersack and Greenberg 2006;Harvey 1996;Nash and Scott 2001). As tables 2 and 3 summarize, these four kinds of relationships are (1) genealogical, that is, relationships by biological descent; (2) internal and economical, in the original sense of the term, referring to relationships essential to the daily activities of whatever is involved in maintaining life (in ancient Greece, oikos, the root of the "eco" in both "ecology" and "economics," referred to a "household," conceptualized in relation to the activities and interactions required for its existence [OED 2010]); (3) external and ecological, referring to relationships between populations and with the environs they coinhabit; and (4) in the case of people (and likely other species as well), teleological, that is, by design, with some conscious purpose in mind (e.g., citizenship criteria).…”