  The point about complete justifier accounts matters for the evaluation of this argument for internalism. As we noted earlier, complete justifier accounts of accessibility internalism provide strong support for mentalism. If complete justifier accounts were considered, premise (3) would have some ring of plausibility. However, we have seen, complete justifier versions of accessibility internalism are too strong; and, partial justifier accounts considerably weaken the support for mentalism. Considering premise (3) in the light of partial justifier accounts of accessibility, we would have to say at once that (3) is false. Partial justifier accounts do not even provide strong support for mentalism, let alone imply it.