This part of the book explains and talks about the evolution of human beings from primitive human civilization to current civilization. What I mean by this is how we have progressed over thousands of years. Since discovering these new discoveries, we have been more destructive and careless. The problem is that we always want more. But again, if we continue like this, eventually there will be nothing. This reckless behavior could lead to the end of civilization as we know it. Additionally, Quinn, makes a statement about the study of how the flight was discovered. It doesn't say that humans didn't have a clear understanding of how flight worked, so they did experiments and tests, trying to find a way to achieve flight. Quinn goes on to say that humans must have a working knowledge of the laws of nature to achieve a goal. The point I'm making here is that humans use knowledge to improve their way of life, which can be dangerous