Maybe he meant that for him is hard to write or create a realistic idea about what to write and how.
Answer: The main idea is about humans relying on animals/pets and vise versa.
Answer:
explains the order of the story/ you can use it to list events in order
Explanation:
I'm not sure but it has alot to do with sequence of events or developed into that later on since they used it to describe a place in time.