Not all knowledge derives from experience. We come primed for our experiential interactions with the world prefigured with an assortment of fundamental predispositions of character and a toolkit of self evident, a priori knowledge.  

The essential principles of logic, default expectations of environmental continuity, a grasp of cause and effect and the simpler concepts of arithmetic appear to be preconfigured in the brain.

Whether or not the generic rules of grammar and syntax are also part of our genetic endowment remains highly controversial.