Amelia Landenberger explains that as a general principle, citations in scholarly works have two purposes: to prove that the point is supported by evidence, and to allow the reader to find the evidence that the author is citing to. The pain of citations comes from the requirement that these citations be made as brief as possible by painstakingly utilizing a series of standardized abbreviations. The requirement to abbreviate arises mainly from a historical limitation: the scarcity of paper and ink.