IntroductionThe article presents a critical analysis of the hypothesis proposed by Quentin Atkinson (2011), which attributes the origin and global spread of human language to an African center, based on the distribution of phonemic inventories across the world’s languages. The study is situated within the broader framework of glottogenesis, where two competing paradigms—monogenesis and polygenesis—attempt to explain the emergence and diversification of language. The aim of the paper is to evaluate the methodological validity and empirical adequacy of Atkinson’s model, particularly its reliance on phonemic diversity as an indicator of linguistic origin. MethodsThe study employs a critical-analytical approach, combining theoretical argumentation with comparative evaluation of linguistic, anthropological, and genetic data. The author reviews Atkinson’s methodology, which is based on statistical analysis of phoneme inventories from 504 languages using data from the World Atlas of Language Structures (WALS) and Bayesian modeling techniques. The critique focuses on the underlying assumptions of the model, the nature of phoneme as a unit of analysis, and the extrapolation of synchronic data to diachronic conclusions. ResultsThe analysis identifies several major methodological and theoretical limitations in Atkinson’s approach. First, the study argues that the size of phonemic inventories is constrained primarily by physiological and articulatory factors rather than by evolutionary or migratory processes. The human vocal apparatus imposes natural limits on the number and type of phonemes that can be produced, which undermines the assumption that phoneme count can reliably indicate historical dispersal patterns. Second, the paper demonstrates that phonemic systems are highly dynamic and subject to significant diachronic change. Evidence from Indo-European and Slavic linguistic history shows that phoneme inventories can both expand and contract over time, making it problematic to infer deep historical processes from their present-day state. For example, the Proto-Indo-European vowel system evolved from a relatively small inventory to a more complex system, while later developments in Slavic languages involved both diversification and reduction of phonological contrasts. Third, the study questions the comparability of phonemes across languages. In many language types, particularly tonal and syllabic systems (e.g., languages of Southeast Asia, Africa, and the Americas), the phoneme is not the primary functional unit; instead, syllables or tones may carry the main functional load. As a result, cross-linguistic comparison based solely on phoneme counts involves comparing non-equivalent units. Fourth, empirical inconsistencies are highlighted. For instance, geographical patterns of phoneme distribution do not align consistently with other anthropological variables such as skin color distribution (illustrated by comparative maps in the article, see Figures 1 and 2), nor do they always correspond to known linguistic facts. Specific counterexamples include Papuan languages with high diversity despite geographic proximity and discrepancies in phoneme counts across well-documented languages such as Lithuanian and Norwegian. Finally, the study critically evaluates the reliability of the WALS database used by Atkinson, noting inconsistencies in data sources and classification practices, as well as variation in how phonemes are defined and counted by different scholars. DiscussionThe findings suggest that Atkinson’s model rests on a series of simplifying assumptions that do not adequately account for the complexity of linguistic systems. The use of phoneme counts as a proxy for historical processes is shown to be methodologically problematic due to physiological constraints, diachronic variability, and cross-linguistic non-equivalence of units. The study emphasizes that language evolution cannot be reduced to a single linear model analogous to genetic evolution. Instead, linguistic systems develop through multiple interacting processes, including convergence and divergence, which may operate simultaneously or sequentially. This challenges both strict monogenetic and polygenetic models, suggesting a more nuanced view of language history. At the same time, the paper acknowledges the innovative aspect of Atkinson’s work, particularly its use of large-scale statistical and computational methods. Such approaches are seen as promising for future research, provided that their assumptions are critically evaluated and their results interpreted with caution. ConclusionThe article concludes that, while Atkinson’s hypothesis is conceptually intriguing and methodologically innovative, its conclusions regarding the African origin of all human languages are not sufficiently supported by the linguistic evidence presented. The study underscores the need for more robust methodological frameworks that integrate phonetic, phonological, historical, and typological data. It also highlights the broader epistemological challenge of studying language origins, given the lack of direct empirical access to early stages of linguistic evolution.