Is it Nature or Nurture, congenital or acquired? The answer is actually quite simple: everything is Nature and Nurture. The structure of the brain determines what we can learn and what we learn determines the structure of the brain.
A newborn baby cannot speak, it sees almost nothing, and controlled movements of its arms and legs are minimal. After being born he learns through significant changes in the brain. These are a condition for and also a result of this learning process.
How would we manage, if we could not visualise three-dimensional objects from flat two-dimensional diagrams? An amazing feat our brain performs. What role does predetermined programming play in this? That is related to how the sun shines on us.