interrogation is the failure to listen to what is said". There was a lax approach to the pairing of officers for interview. Officers who are less familiar with each other should be put together to reduce risks of poor or illegal practice. A number of regular pairings of interviewing officers seems to have led to collaboration in falsifying evidence. It was West Midlands Police policy to transfer the vast majority of documents to microfiche after two years and destroy the originals. Often, the microfiche copies were unreadable. The practice also made it impossible to ascertain if statements had been interfered with through ESDA scanning and analysis. Low level paperwork tasks were supervised by upper management, which was in general too involved in practical work including investigations, distracting from leadership, policy setting and supervision. Management focused on paper-based processes and was given little management training. Junior officers appeared to have a practical veto on new recruits. Management practice was sufficiently poor for misleading statements to be made by the squad to external authorities. For instance, it told the Court of Appeal that officers had been disciplined after interference with witness statements, but that the changes did not include "incriminating admissions", which was wholly untrue. This led to the appeals of Horobin and Wilcox being turned down in 1988. Confession evidence The SCS often relied on confession evidence to the exclusion of other kinds of evidence, despite the fact that it is inherently unreliable. Sometimes this can simply be due to the presence of authority and the expectation to confess. It can be due to stress factors in interviews. Given a certain level of stress, some interviewees will confess simply to bring the experience to a stop. A third group may come to believe in their guilt over time. Thus false confessions are not the product of coercive techniques alone, but these factors can make confessions unsound. Kaye noted five cases where a statement with a confession was presented back to other suspects, and self-incriminating reactions were noted, although not usually signed by the suspects. This evidence was then used in their convictions. For instance, Foran was noted as saying "What can I say? It's all there isn't it?" Boswell was recorded as saying "That fucking bastard, I'll kill him … we all agreed to make our own statements if caught and I can't make one against my own will, can I?"