I therefore propose an alternative scenario:

Rail journey to Lake Titicaca, Peru
Rail journey to Lake Titicaca, Peru

the mother–child paradigm at the time of postnatal brain growth. The two facts that are missing in Tomasello’s work are mentioned here.

1. There is now a proposal for the situation in which the first step was taken: Postnatal brain growth led to the helpless human newborn, which was dependent on cooperation and intentional communication.

The situation was inevitable because it was predetermined by biological evolution, and it was permanent and not unique or accidental because all individuals went through this childlike stage of development. The situation therefore required some form of an evolutionary adjustment.

2. There is now a proposal for the individual who took first step. This was the newborn’s mother, who could only ensure the survival of the child through cooperative actions.

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