Paper mache problems in epistemology: A defense of strong internalism

I attempt to persuade the reader that externalism admits of no plausible in terpretation. I argue that reliability is a concept with very different con tours from epistemic justification, and that attempts to explicate justific ation in terms of reliability must fail. I address several other forms of e xternalism, and also mixed forms of justification. I then argue that extern alist theories of justification cannot close the gap between mere true beli ef and knowledge. I suggest that a fourth condition on knowledge is require d, regardless of whether justification is internalist or externalist. I arg ue that with such a fourth condition a strong internalist theory of justifi cation is adequate to the task that remains in making true belief knowledge . Additionally, strong internalism is more satisfying to our intuitions tha n externalism and mixed forms of justification.