The author remind his readers that light pollution is growing rapidly and, “Too little darkness” is big “Trouble for all”. Paul Bogard’s presentation of facts and evidence supports the claim that follows at the end of paragraph three that "without darkness, Earth's ecology would collapse." Bogard uses rhetorical questioning to persuade his audience that natural darkness preservation is essential. He asks his audience
"what the vision of the night sky might inspire in each of us, in our children or grandchildren?" in a method that also appeals to emotion. Bogard develops his argument, adding guttural power to the idea that the issue of maintaining natural darkness is relevant.