By Duane D. Quiatt, Jun'Ichiro Itani
Publication by means of Quiatt, Duane D.
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Extra info for Hominid culture in primate perspective
For such information we must turn to the data provided by captive studies, particularly those that have focused upon the cognitive and linguistic capacities of apes. " stage, they have begun to paint a clearer picture of the competencies of our closest living relatives, a picture that is changing our perspective of early hominids. We now know that bonobos (Pan paniscus) can come to understand language at the level of a 2-to-21/2-year-old child and that they are able to do so with essentially the same type of language exposure that a child encounters.
In other words, there must essentially be a free attention-processing channel that attends to the rock, shifts its position, picks it up again if it was set down during a rest, and soon. All of this must be done even if there are frightening noises, fights, or any manner of other social and environmental stimuli that must also be processed. No matter what is going on, the bearer cannot forget the object when it is not needed or it will not be there when it is needed. You might invent a means of strapping an object to yourself, but such a behavior is a complex act.
Planning skills at that level cannot be passed from generation to generation in the genome but rather must be spun by each brain anew for each occasion. It is not difficult to envision means by which selection would operate to produce increasingly efficient planners who could plan anew for each occasion once the process was bootstrapped. When planners pitted their planning skills against one another, those who could plan further in advance would clearly have an advantage. Individuals would then need to plan their future actions not only by anticipating the consequences of their own actions but also by assuming that other individuals were similarly making plans and that these plans (imagined but not observed) could also affect the future.
Hominid culture in primate perspective by Duane D. Quiatt, Jun'Ichiro Itani