In the context of the dynamic model, technology is defined as the system that provides knowledge and equipment for a given production system. Based on this idea, on one hand, technology is a base for development and growth of the production systems. However, production is also a platform for further improvement and development of technology. Society is being considered as the origin of human resources. In the context of the Dynamic model, society is also influenced by production activities.
Nature is the only source of natural resources, both material and energy.
In sustainable development, technology is a base for the economic development which is aimed at social goals and safe environment. The hard truth is that the conventional economic evaluation system is partially blind. It sees some things and not others. It carefully measures and keeps tracks of the value of those things most important to buyers and sellers, such as food, clothing, manufactured goods, work, and indeed, money itself. In fact, the partial blindness of our current economic system is the single most powerful force behind what seem to be irrational decisions about the global environment.