Every time we make, review, elaborate or deepen a connection between ideas, concepts or units of knowledge we increase the richness of our own internal representation of the knowledge space around those ideas.
human experience and cognitive context
The more we understand of the world in which human experience has taken place the more capacity we have when attempting to see things from another's perspective or cognitive context.
Increasing our knowledge and understanding of the world often leads to better understanding of the people who have grown up in that world.