 Generationist forms of content variantism raise the question of accuracy in memory in an especially vivid way: if the content of the retrieved representation can differ from that of the trace, which can in turn differ from that of the perceptual representation—or if, as the simulation theory claims, there need be no trace linking the retrieved representation and the perceptual representation—there would seem to be no guarantee that memory provides us with accurate representations of past events. Generationist forms of content variantism do not, however, guarantee inaccuracy, and preservationist forms of content variantism do not guarantee accuracy, for the accuracy of memory has two distinct dimensions.