Brain and network
The brain of an individual, previously only responsible for the integrity of its own individual, is given the additional function of enabling contact with the brains of other individuals in intentional communication, thereby circumventing its own limitations.
This results in an evolutionary change of function and an evolutionary innovation. The brains of individuals in the social group form a network, just as PCs make up a network.
And just as a network consisting of many PCs can solve tasks that would overburden the individual PC, a network of many human brains can solve larger tasks than a single brain.
The network is created to circumvent the natural limits of brain growth (hypothesis 11) a second time. It is created before the beginning of mind and culture and is also arranged in front of them as their prerequisite.