Idea for the Primitive Age

If i could introduce an idea or an invention to a primitive culture it would be literature. I chose literature because it is an important part in everyone's life whether we like it or not. In the primitive age literature wouldn't be as helpful to them as a spear but it would impact their adaptability and learning skills. Literature would impact their lives by exposing them to a new knowledge that would help them develop communication skills and  cognitive skills. These skills could be crucial impact in future generations, if our primitive ancestors would of been more formally educated, there's no telling where our current generation would have been at.