The purpose of “Sustainable Development” raises the following basic question: Which “indicator”
should be used to identify the human activities that are contrary to this purpose?
In this paper it will be shown that “Entropy Generation” constitutes this Indicator. To this purpose, we
will use three examples where Entropy Generation takes place and demonstrate that this generation of
entropy is always contrary to Sustainable Development.
A forecast of future human activities will be then presented which will demonstrate that large Entropy
Generation will continue. Sustainable Development can be thus achieved only by entering an “Era of
Reduced Entropy Generation”, which requires however drastic changes from Institutional policies to
our own values and way of life.