Which statement best describes why context is "the easiest, yet also, paradoxically, most difficult of the five C's to teach"?

The context when teaching history is let's say when we watch a Star Wars movie the first letters that appear on the screen describing the background of the story. It is in history like teaching different frameworks that in a way are interconnected. It is easy and at the same time difficult because the frameworks are interconnected but not in a logical way since history is about human beings and we are not at all predictable. History is a social subjects and social subjects are not exact like in mathematics in which 1 plus 1 is two.