  One line of argument that can be offered in favor of accessibility internalism, though one that has seldom found explicit expression in the literature, trades on the idea that one is justified in believing p only if one has justified the belief that p. (Leite 2003 discusses the connection between being justified and justifying.) Justifying a belief, of course, is an activity in which one adduces evidence or reasons in favor of the belief, and when one is engaged in this activity one is actively aware of the evidence or reasons brought forward. Of course, if one actually is aware of these bits of evidence or reasons, then certainly one can be aware of them. These items of evidence or reasons offered in the act of justifying, we may say, are the justifiers for the belief in question. Hence, if being justified implies having justified, then being justified implies that one can be aware of the justifiers. So, we might conclude, the mere fact that there are justified beliefs implies accessibility internalism.