A belief system can contain many false beliefs that might warrant the subject in rejecting all potential defeaters, satisfying subjective immunity to doubt (condition 2).

The second difficulty has to do with condition (3), which is supposed to secure objective immunity to doubt. Although it is undeniable that a subject for whom condition (3) is satisfied would be in a desirable situation, it does not seem to be attributable to her in the right sort of way—and, especially, not in the way that we expect certainty to be attributable to the person who is certain. To see this, suppose that my warrant for the belief that p is only moderately good. Nevertheless, my guar