The most important feature of the highest organization of primates among other mammals is the relatively larger size of the forebrain hemispheres with a grooved cortex. Due to this, conditioned reflexes are easily developed in primates; they quickly adapt to changing habitat conditions. They have complex behavior, most of them lead a complex social life.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.