Using a resource means dispersing it. When we quarry limestone and send it off to build public monuments, or when we mine coal and burn it to drive turbines, we are making use of a concentrated resource, and dispersing it. A large, continuous mass of limestone winds up as a number of discrete blocks spread around in different locations; and coal, after briefly giving off heat and light, becomes a small amount of ash and a large amount of gas. Resources may be temporarily accumulated in a stockpile, but their actual use always results in dispersal.
Of course, crime remains a major problem in some areas. It is still a leading political issue in a handful of large cities, such as Detroit. Local television news programs, operating under the banner "if it bleeds it leads," still make much hay of grisly crimes. Furthermore, America's murder rate — bolstered by the cutthroat nature of the drug trade, the easy availability of handguns to criminals, and a variety of cultural factors — remains among the highest in the developed world. And while overall crime rates are generally lower in the United States than they are in Europe, wealthy Asian democracies like Japan and Taiwan enjoy crime rates far lower than America's.
Longer essays may also contain an introductory page that defines words and phrases of the essay's topic. Most academic institutions require that all substantial facts, quotations, and other porting material in an essay be referenced in a bibliography or works cited page at the end of the text. This scholarly convention helps others (whether teachers or fellow scholars) to understand the basis of facts and quotations the author uses to support the essay's argument and helps readers evaluate to what extent the argument is supported by evidence, and to evaluate the quality of that evidence. The academic essay tests the student's ability to present their thoughts in an organized way and is designed to test their intellectual capabilities.