Robin Dunbar's hypothesis that language capacity in response to the demands of maintaining large groups suggests a more specific hypothesis that language arose from a cognitive calculus by which animals could predict their status in complex dominance situations.

Dunbar's idea that neocortex size limits the number of relationships beings may be able to maintain is an engaging hypothesis for cognitive psychologists interested in a limited capacity model. It is suggested that the thesis would have been enhanced had the author considered the concept of peers as part of an information processing scheme.

Language started evolving early, before gesture; commonalities of generativity between language and praxis have been over-emphasized. Language did not drive hominid brain evolution, evolving multifactorially and interactively. More than communication, it permits a cognitive modelling of reality and hierarchical data management. As the interactive sum of various cognitive and linguistic systems, and of brain structures each semi-independently evolved, it is not part of a single, general-purpose cognitive processor, nor is it a separately-evolved quasi-independent module.