Much of what we call consumption constitutes investment in human capital. Direct expenditures on education, health, and internal migration to take ad… - Theodore Schultz

This branch of economics has suffered from several intellectual mistakes. The major mistake has been the presumption that standard economic theory is inadequate for understanding low income countries and that a separate economic theory is needed. Models developed for this purpose were widely acclaimed until it became evident that they were at best intellectual curiosities.

[Schultz specifically refers to the manner in which inputs are used when he states that one implication of his] efficient but poor hypothesis... [is] that the combination of crops grown, the number of times and depth of cultivation, the time of planting, watering, and harvesting, the combination of hand tools, ditches to carry water to the fields, draft animals and simple equipment -- are all made with a fine regard for marginal costs.

The dominant social thought shapes the institutionalized order of society... and the malfunctioning of established institutions in turn alters social thought.