Most of my students seem desperate to blend in, to look right, not to make a spectacle of themselves. (Do I have to tell you that those two students having the argument under the portico turned out to be acting in a role-playing game?) The specter of the uncool creates a subtle tyranny. It's apparently an easy standard to subscribe to, this Letterman-like, Tarantinolike cool, but once committed to it, you discover that matters are rather different. You're inhibited, except on ordained occasions, from showing emotion, stifled from trying to achieve anything original. You're made to feel that even the slightest departure from the reigning code will get you genially ostracized. This is a culture tensely committed to a laid-back norm.
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.