Can human social evolution be described in terms common to other sciences, most specifically, as an energy process? The Eighth Day reflects a conviction that the human trajectory, for all its uniqueness and indeterminism, will never be satisfactorily understood until it is framed in dynamics that are common to all of nature. The problem in doing this, however, lies in ourselves. The major social theories have failed to treat human social evolution as a component of broader natural processes.

The Eighth Day argues that the energy process provides a basis for explaining, comparing, and measuring complex social evolution. Using traditional ecological energy flow studies as background, society is conceived as a self-organization of energy. This perspective enables Adams to analyze society in term of the natural selection of self-organizing energy forms and the trigger processes basic to it. Domestication, civilization, socioeconomic development, and the regulation of contemporary industrial nation-states serve to illustrate the approach. A principal aim is to explore the limitation that energy process imposes on human social evolution as well as to clarify the alternatives that it allows.

Richly informed by contemporary anthropological historicism, sociobiology, and Marxism, The Eighth Day avoids simple reductionism and denies facile ideological categorization. Adams builds on work in nonequilibrium thermodynamics and theoretical biology and brings three decades of his own work to an analysis of human society that demands an extreme materialism in which human thought and action find a central place.

C. P. Snow once remarked that not knowing the second law of thermodynamics is like never having read Shakespeare. Yet, while many people grasp the first law of energy, “Energy can neither be created nor destroyed,” few recognize the second, “Entropy can only increase.” What is entropy anyway, and why must it increase? Whether we want to know how a device as simple as a refrigerator works or understand the fate of the universe, we must start with the concepts of energy and entropy.

In The Refrigerator and the Universe, Martin and Inge Goldstein explain the laws of thermodynamics for science buffs and neophytes alike. They begin with a lively presentation of the historical development of thermodynamics. The authors then show how the laws follow from the atomic theory of matter and give examples of their applicability to such diverse phenomena as the radiation of light from hot bodies, the formation of diamonds from graphite, how the blood carries oxygen, and the history of the earth. The laws of energy, the Goldsteins conclude, have something to say about everything, even if they do not tell us everything about anything.