 There are, however, two important problems with this argument. First, the major premise of the argument seems false. A very large percentage of one's of justified beliefs were never justified in the manner envisioned. We need only recall the example of rapid acquisition of many perceptual beliefs, all of them justified. But none were justified by any activity engaged in by the cognizer, either at the moment of acquisition or at any later time. Moreover, second, even if each justified belief was at some time justified, this fact implies only that there was some time at which the cognizer could be aware by reflection of the relevant justifiers. It hardly follows that the cognizer can be reflectively aware of these justifiers at any time she cares to try, and it is this sort of accessibility that internalism requires. If accessibility internalism were merely the thesis that for each justified belief p, there is some time at which the cognizer can be aware of the essential justifiers for the belief that p, then accessibility externalism would become the thesis that there is never a time at which the cognizer can be reflectively aware of the relevant justifiers. Yet the externalist position is the much more modest point that there are some cases of justified belief where the cognizer is unable to be reflectively aware of the essential justifiers. Defense of accessibility internalism on the grounds that being justified implies having actually justified would make externalism into far too strong a thesis.