Psychologists have long supported the theory of mathematical talent; mathematical ability is the ability that human beings have from birth, even animals have this ability. They believe that there is a natural mathematical core, through self-development, this mathematical core will eventually grow into all the mathematical abilities we are familiar with. Recently, some opponents have put forward a different point of view; mathematical ability has no talent, can only be the product of culture.
Most of the residents of primitive tribes can only express numbers below 5 or even less best supports the opponent's view.