The document discusses economic development and how it relates to the use of resources and waste. It states that economic growth, or an increase in total productivity, does not necessarily result in economic development, defined as growth in average income per person, if population growth outpaces economic growth. The document also introduces the concepts of gross national income measured at market exchange rates and purchasing power parity, using examples like the Big Mac Index to illustrate how purchasing power parity can provide a better comparison of national economies than market exchange rates alone.