Within the social construction of knowledge is an area of epistemology that requires many voices to comprise a single account of events. This area is a branch of epistemology called "Testimony and Peer Disagreement." Within it, truth---and any knowledge about it---becomes based on the testimonial account of an individual, group, or community's hearing of what others say, reading what others have written, or even believing what others have proclaimed as belief. Testimony is often used as evidence of happenings in the world as individuals reflect on the past because they are generally aiming to be reliable in their retelling. However, when there is uncertainty about what is accounted for or believed to have occurred, what can be known as true, how can its validity be tested, and which individuals hold command over truth and knowledge? Two literary communities that have attempted to answer those three questions through their accounting of testimony and peer disagreement in communal settings are the Magical Realists and Postmodernists. The Magical Realists rely on the phenomenon of the magical within the operations of history to account for an origin of knowledge attainable yet mysterious, while the Postmodernists spend time critiquing the politics of knowledge contained within subjective minds and collectives that claim to have access to a nonexistent objectivity. Despite their differing concentrations, both groups demonstrate striking similarities in their responses to concerns about truth and knowledge, but their answers to these epistemological questions bear implications that diverge greatly. This thesis will investigate the methodology and establishment of truth and knowledge concepts through the medium of testimony as filtered through peer disagreement processes, focusing on how both communities of thought navigate their sense of truth, its grounding in knowledge---individually and collectively---, and how what becomes true is dependent upon regimes of power that control and negotiate the discursive nature of history and the forces parallel to it that inform and suspend its influence.