The simplest part of sound preservation involves technology and its application. The real complexities lie in a mix of social legal, and financial issues. The social issues include how archivists, curators, librarians, historians, or anyone with limited engineering, computing, and other technical training can evaluate competing claims and risks. The legal issues include copyright and the risks that an institution may choose to take about what constitutes fair use and preservation copying. The financial issues include how much of what quality of preservation an institution can afford, and for how many of the items in its collection.