2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/52805In cosmic holography, the fundamental quantity is the degrees of freedom on a horizon surface rather than the material contents within the volume. That is, the horizon area and hence cosmological expansion rate H is related to the entropy. Using this as a guide, we examine the consequences of an effective dark {\it entropy} on the past and future dynamics of the universe. The results, including nonmonotonic expansion behavior, are interesting apart from the theoretical motivation.7 pages, 7 figuresHigh Energy Physics - TheoryAstrophysicstext