Vitology and Evolutionary Theory: Fitness, Natural Selection, Adaptation, and Viability

This article compares Vitology with evolutionary theory in order to separate established evolutionary knowledge from a possible residual contribution of the Vitological research program. Natural selection, evolutionary fitness, differential survival and reproduction, life-history strategies, intergenerational trade-offs, long-term geometric fitness, kin selection, evolutionary rescue, phenotypic plasticity, and multilevel evolutionary processes are identified as established scientific content rather than independent Vitological novelty. Particular attention is given to the distinction between evolutionary fitness and Vitological viability. Evolutionary fitness characterizes, within a defined evolutionary model, the contribution of a heritable variant, genotype, organism, or other specified evolutionary unit to subsequent generations or population dynamics. Vitological viability is directed toward measurement of the current state and trajectory of a particular system with respect to preservation of critical functions, recovery, adaptive capacity, reserves, viability boundaries, and future viable states. These coordinates may be related but should not be treated as identical. Survival is already an established component of evolutionary fitness, and the term viability selection has long been used in population genetics. Vitology therefore cannot claim priority for relating survival to selection. The possible residual contribution of H5 is formulated more narrowly: whether multidimensional viability metrology provides reproducible information about state, recovery, reserves, and future system trajectory beyond strong models of evolutionary fitness, demography, life history, ecology, and selection. The article introduces the candidate constructs of Viability–Fitness Divergence and the Viability–Fitness Coupling Profile. Eight testable hypotheses H5-1–H5-8 are formulated. The strongest requires that prospectively operationalized Vitological variables improve predictive performance beyond the strongest available evolutionary model on independent data. Keywords Vitology; viability; evolutionary theory; natural selection; evolutionary fitness; adaptation; survival; reproduction; life history; evolutionary rescue; long-term dynamics; multilevel dynamics; viability trajectory; cross-domain metrology.