2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/127370In this scenario, a generic meta-stable deSitter vacuum site in the cosmic landscape in string theory has a very short lifetime. Typically, the smaller is the vacuum energy of a meta-stable site, the longer is its lifetime. This view of the landscape can provide a qualitative dynamical explanation why the dark energy of our universe is so small. The argument for this scenario is based on resonance tunneling, a well-known quantum mechanical phenomenon, the topography of the landscape, and the vastness of the cosmic landscape. Mapping the topography of the landscape, even if only in a small region, will test the validity of this scenario.11 pages, 1 figure. In revised version, some mis-statements corrected. New comments addedHigh Energy Physics - TheoryGeneral Relativity and Quantum Cosmologytext