Editing Internalism and externalism (section)

==== Internalism ====
Two main varieties of epistemic internalism about justification are access internalism and ontological internalism. Access internalists require that a believer must have internal access to the justifier(s) of their belief ''p'' in order to be justified in believing ''p''. For the access internalist, justification amounts to something like the believer being aware (or capable of being aware) of certain facts that make her belief in ''p'' rational, or them being able to give reasons for her belief in ''p''. At minimum, access internalism requires that the believer have some kind of reflective access or awareness to whatever justifies her belief. Ontological internalism is the view that justification for a belief is established by one's mental states. Ontological internalism can be distinct from access internalism, but the two are often thought to go together since we are generally considered to be capable of having reflective access to mental states.<ref name="Sosa, Ernest 2008">Sosa, Ernest, Jaegwon Kim, Jeremy Fantl, Matthew McGrath. Introduction to Part V. ''Epistemology.'' By Ernest Sosa, Jaegwon Kim, Jeremy Fantl, Matthew McGrath. Malden: Blackwell, 2008. 305–309. Print.</ref>

One popular argument for internalism is known as the 'new evil demon problem'. The new evil demon problem indirectly supports internalism by challenging externalist views of justification, particularly [[reliabilism]]. The argument asks us to imagine a subject with beliefs and experiences identical to ours, but the subject is being systematically deceived by a malicious Cartesian demon so that all their beliefs turn out false. In spite of the subject's unfortunate deception, the argument goes, we do not think this subject ceases to be rational in taking things to be as they appear as we do. After all, it is possible that we could be radically deceived in the same way, yet we are still justified in holding most of our beliefs in spite of this possibility. Since reliabilism maintains that one's beliefs are justified via reliable belief-forming processes (where reliable means yielding true beliefs), the subject in the evil demon scenario would not likely have any justified beliefs according to reliabilism because all of their beliefs would be false. Since this result is supposed to clash with our intuitions that the subject is justified in their beliefs in spite of being systematically deceived, some take the new evil demon problem as a reason for rejecting externalist views of justification.<ref>"The New Evil Demon Problem" by Clayton Littlejohn, ''The Internet Encyclopedia of Philosophy'', {{ISSN|2161-0002}}, <nowiki>http://www.iep.utm.edu/</nowiki>, today's date</ref>