Quote 49
We should not accept an evil we can change.
We would stand up against it, would we not?
Yes. We should.
We would be heroes, even. (71.45-48)
Destruction of physical property doesn't change evil. The only way it can change is if the evil people examine themselves.
Quote 50
My full name is Cadence Sinclair Eastman, and contrary to the expectations of the beautiful family in which I was raised, I am an arsonist.
A visionary, a heroine, a rebel.
The kind of person who changes history. (72.14-16)
Cadence doesn't change world history, only Beechwood history. And Beechwood will always rebuild itself.
Quote 51
"Granddad held so much power," I say. "And now he doesn't. We changed an evil we saw in the world." (72.27)
In changing an evil, Cadence literally, physically changes her brain. So she doesn't change the evil nearly as much as she just moves the evil from the outside world into her own head.