Abstract. The paper is concerned on the important issues of the causal or structural relations between the sustainability of the whole Universe and the dissipative systems in our bubble of Universe. Based on the gap between the general entropy velocity and the entropy velocity inside the dissipative systems, a taxonomic criterion for identifying the classes of dissipative systems is captured and operated. In this context, the correlation between the entropic sustainability and the dissipative systems is examined and concluded. The paper argues for the necessity (in the logic order) to pass from the optimal rationality to the sustainability rationality, based on the entropy conclusions and predictions (in the matter, three types of social rationality are identified and logically characterized*. In addition, the paper analyzes the arguments to assert that the complementary environment of a done dissipative system is complementary only in a relative way. This relativity is examined from the perspective of the Prigogine’s principle of the minimum production of entropy (for the mentioned principle, the paper aims to provide a sui-generis demonstration), by proposing the concept of the minimum entropic gradient as anchor of the entropic interaction in the Universe. All these results or observations could be used by other researchers to apply them to the economic systems which are, of course, dissipative systems.

Keywords: dissipative systems; entropy; sustainability; rationality.