The Brundtland Commission of the United Nations stated on March 20, 1987: “sustainable development is development that meets the needs of the present without compromising the ability of future generations to meet their own needs.
The aim of any effort for sustainability is long term survival of communities & societies as well as the planet that we live on.
Irresponsible development of communities & societies leads to a culture of unsustainable living.
Through considering that communities & societies are in fact interlinked as the environment of our planet is interlinked a more holistic approach can be taken to care for not only the needs of one group but through mutually beneficial agreements the needs of the whole not only right now but continuing on into the future.
This is accomplished through many ways.
Green (environmentally friendly) building, sustainable methods of agriculture, responsible use of resources through reorganizing living conditions, through creating more efficient methods of energy production & consumption, and overall through implementing practices that make the long term future of society and the planet an important consideration in the decision making process.
The Sustainability Act attempts to do this in theory through considering the needs of other cultures / societies that do trade with equal to their own regardless of the dis-similarity in wealth / economic status.
As a result of this view of equality reciprocity occurs in that a fair amount of compensation is provided for the goods / services provided and open communication and trade channels can be maintained over the long term between participants.
Because of this open trade and communication an ongoing actionable relationship is formed and because both participants are receiving fair compensation this relationship becomes sustainable.
In the natural world such relationships are symbiotic and this symbiosis is the type of sustainable relationship that will benefit both parties for many many years into the future.