Waiting for David p.69 Post 12

What does the following quote frome the chapter tell you about the city?

"That was one thing about being outside the city: It made all that nature stuff they taught in school seem a lot more useful. She remembered now how rainwater fell on the mountains and soaked into the ground..."

This quote tells just how protected the people in the city are. They have no clue what really goes on outside of their city. Even though they are taught things most of them never actually apply to them.