It's to know your purpose before you read something because a purpose can:

what are you asking?

the novel is told in flashback

the hobbit: myths,legends and folktales influence world building and how the motifs of the hero and quest are developed in literature."willing suspension of disbelief" is the evidence and an exercise in which the critical intellect has been changed to uncomplaining.

the hunger games : its a story about a reality show where 24 teenagers must kill one another with spears,rocks,arrows,knives,fire and by hand.“destroying things is much easier than making them.”is the evidence which gives us message that destroying is easier and making something new is extremely difficult.