currency book

On a cold winter''''s night a grandmotherly women who lives in a special cottage allowed a Goblin to come in out of the cold. Goblin likes Grandma but Goblin is still Goblin. Goblin has heard Grandma has great treasure. Goblin wishes to have Grandma''''s treasure and bring back to clan. Granny seems willing to share treasure. What does treasure and paper have in common? Why does Granny wish Goblin to learn what squiggles on paper mean? Does not treasure mean things that are shiny?