The Mbuti people still reproduce a 75,000 years old recursive pattern.

Modern humans don't always leave cultural or technological evidence. Yet, Mbuti artifacts, like net-hunting tools and patterns, reveal their modern cognitive capacity. They create geometric and musical structures requiring specific working memory seen in modern .

Netlang: A software for the linguistic analysis of corpora by means of complex networks.

To date there is no software that directly connects the linguistic analysis of a conversation to a network program. Networks programs are able to extract statistical information from data basis with information about systems of interacting elements. Language has also been conceived and studied as a complex system.

Evidence of recursion in tool use.

We discuss the discovery of technologies involving knotted netting, such as textiles, basketry, and cordage, in the Upper Paleolithic. This evidence, in our view, suggests a new way of connecting toolmaking and syntactic structure in human evolution, because these technologies already exhibit an "infinite use of finite means," which we take to constitute the key transition to human cognition.