but how do you become aware of the problem?
By giving your story to another person and asking if she/he knows what you are talking about. The point is this, Glance => does the reader need to know the background of the terms you used? Or can she/he follow the story without this knowledge? What would be lost if not?
I've been following "on the road again" - you all used Nordic mythological knowledge as a background. Do you think, a reader without this knowledge could follow your group story?
Edit: Sorry, the typo devil is in my room today