Which central idea is developed by the equation in the last sentence of wheels of change

Which detail from Chapter 5 of Wheels Of Change reflects a development in ... What is the author's main purpose for presenting these events chronologically at the end of ... a cause-and-effect graphic that shows how one idea lead to another.

it's like watching a fable, it's not really about the animals but rather it has a meaning that is understood by us and that is implicit, not explicitly said. implicit ideas are common and are used in almost all works of art, from writing to painting to sculpting.