The implications of this are far more serious than just lines, however. Can the environment handle 2 billion more people polluting?
I wanted to create a conversation between my initial selfish thoughts about overpopulation and the real environmental impacts. My hope was that if I didn't already get the reader invested by talking about lines, bringing up the environment would. I believe this line of inquiry fits into the theme of the paper. Later on, I explore ideas about the betterment of individual humans versus the whole species.