There cannot be global sustainability without local sustainability, or vice versa. The winds of change, however, can be heard on the horizon and they indicate the time to move beyond sustained development approaches is coming soon. Common sense has started to find solid ground, and therefore there is a need to present sustainability thoughts in ways that can be easily understood, especially at the local level. For example, traditional economic development occurs often even when environmental quality is not of prime consideration.
Sustained models are different forms of sustainable development models.
In other words, sustained models or sustainable development models can be understood as situations resulting from sustainability failures, as it is explained below. The dominant component in each of these models maximizes development at the expense of the other components or sectors. In all these partnerships, the partners maximized their objectives by exploiting the non-partner, or passive sector. There can be development even when one or two sources of development are in passive form. The sufficient and necessary condition for sustainability to take place is when all sources of development are present in active form at the same time.