Questioning:
Why does an accumulation of things in triangle forms and a star on top represent just the Christmas tree?
Associating:
This form can also represent a process of investigation. The accumulation of things at the bottom represents the collection of primary information. The primary information then points to a second layer with more tailored information and investigation directions. As the investigation went on, the information and direction of the investigation were more tailored and approached to the star on top, which is the goal of the investigation.