Abstract | This short article provides a clarification to the idea of sustainability. It compares the ideas of efficiency and effectiveness with the idea of sustainability to provide some clarity and understanding of the term sustainability. Space, time, context, objective function and value are the bases used to compare, clarify and present a stand on what we understand by sustainability. The article shows the relationship of the three terms and how the idea of sustainability encompasses the ideas of effectiveness and efficiency. Based on the above analysis, the article provides a working definition of sustainability. |