 One worry about acquaintance accounts stems from the observation that we sometimes err about our experiences. However, most acquaintance theorists will concede that we can be wrong about our own phenomenal states. The theory implies only that, under certain conditions, an experience’s phenomenal reality—the “quality” in Chalmers’ terms—constitutes how it appears to the thinker—the “concept” of that quality (see also Horgan and Kriegel 2007; Gertler 2012). When those conditions are met, we are aware of the experience in a way that could not occur in the absence of that experience, and so our self-ascription of the experience will be true.