This essay examines the stages of inquiry when we seek to formulate quality of life in an era before our own. There arises the question of the extent to which today's formulation of quality of life can be applied to an era far removed from our own. Implicitly, there is the nature of the time interval, T[subscript 1]...T[subscript n], and the causal significance of intervening events. Data of a numerical sort can be hard to retrieve due to fires, wars, and mishandling. Quantitative data can be found in censuses and military records. Information in its raw form is referred to here as protodata. Figure 1 provides a schematic overview of the search for quality of life by subjective and objective modes of inquiry.