When a statement is only on one side and doesn't care for the other
This is an opinion oriented question, just use your imagination. No one can "Answer" this for you.
Answer:
Sachar writes the humorous plot of Holes in a straightforward manner; however, he weaves into the plot three subplots. The subplots are tall-tale motifs that provide explanations about incidents involving previous Yelnats generations that significantly impact Stanley's life as well as the lives of others.