Another idea is the role of government or authority in controlling population. In '2br02b', it shows how the authorities might use extreme means to manage the number of people. For instance, they may have strict rules about birth and death. And also, it might touch on the moral and ethical questions that arise from such control. People in the story might be forced to make difficult choices that go against their natural instincts because of these population - control regulations.
The main ideas also include the value of life. With overpopulation, the value of an individual life seems to be diminished in the context of the story. It makes the reader think about how we as a society should view life when resources are scarce and there are too many people. Is life still precious? And how can we balance the needs of the many with the rights of the individual? These are some of the questions that the '2br02b' short story may be trying to address.