Iscuss epistemology and the legend of the Sphinx in Oedipus Rex. How do these monsters both guard and reveal knowledge?

Epistemology (i/E?E?pE?stEE?mE lEdE i/; from Greek a??II?I?I I®I?I· (epistA mA ), meaning ”knowledge, science”, and I»I?I?I?I (logos), meaning Study of”) is the branch of philosophy concerned with the nature and scope (limitations) of knowledge.[1] It addresses the questions:
What is knowledge?
How is knowledge acquired?
How do we know what we know?

Thesis: The idea of pharmakos in Oedipus Rex is embodied in the interaction between the sphinx and Oedipus and how the sphinx guards and reveals knowledge. Pharmakos is the idea that there is a duality to things; that an item can be both a cure and a poison. The sphinx is used as a pharmakos in Oedipus Rex because not only does her physical appearance portray a duality, but also her riddles conceal knowledge in their ambiguity, but also in a sense, reveal truth concerning Oedipus and the Greek society.
I. Introduction
a. Thesis
II. Discussion of Epistemology
a. Definition
b. Epistemological Problems in Oedipus Rex
III. The Sphinx
a. History of the myth of the sphinx
b. Her original purpose
c. Analysis of the Riddles
IV. Significance of the answers to the riddle
V. Analysis of the relation between the Sphinx and Epistemology
a. Her and Oedipusa role as a pharmakos
VI. Conclusion
Works Cited
Carel, H. Moral and epistemic ambiguity in Oedipus Rex.Janus Head. 9.1 (2006): 91-109. Print.
Gosse, A. The Magic of the Pyramids and the Mystery of the Sphinx. London: Theosophical Pub. Soc. , 1915. 60-77. Print.
Kallich, Martin, Andrew MacLeish, and Gertrude Schoenbohm. Oedipus: Myth and Drama. New York: Odyssey Press, 1968. 3-46. Print.
South, Malcolm. Mythical and fabulous creatures: a source book and research guide. Greenwood Pub Group, 1987. 179-91. Print.
Zivie-Coche, Christiane, and David Lorton. Sphinx: History of a Monument. Cornell Univ Pr, 2004. 4-12, 23-35. Print.