Today's challenge: Striking a balance between presenting a certain image or symbol often enough in a book that the reader notices it and remembers it when the time comes for its importance to be revealed, but not so often that it becomes irritating.
As a reader, I love to pick up clues and see them fall into place. But I hate when the importance of an object is revealed, and I--don't even remember the object being introduced in the first place.
It's a question of rhythm, I think; these images and symbols are notes that must be sounded at intervals.
I must have a clue! But not too much of one.