Abstract. This paper is aspiring to get a logical explanation on the entropy velocity (i.e. on the entropy acceleration) in a Universe “endowed” with a dissipative system. To this end, some concepts of dissipative structures emergence are analyzed, in a new paradigm of the logically vivid systems. In connection with the increasing global entropy, some crucial concepts as: the time arrow, the complexity degree, the specific time (that is, own time, or assigned to process time) are treated and correlated. The main objective of the paper is to find out a logical explanation for accelerating of the entropy by the entropic heterogeneity accompanying the dissipative structures arising. A few answers are proposed while many other questions are stimulated in the matter.

Keywords: entropy; time arrow; dissipative structure; heterogeneity; temporal tact.