I. Why it's a problem.
D. Deception, self deception, and human greatness.
The role of filtered experience and illusion in the work of Ernest
Becker and in turn of the 21st century work on attention.
See Shelley Taylor's Positive Illusions: Creative Self-Deception
and the Healthy Mind (New York: Basic Books, inc., 1989) for an
extended presentation of this data and a fascinating discussion of the
persuasiveness and utility of self-deception.
See Paul Ekman's Telling Lies: Clues to Deceit in the Marketplace,Politics, and Marriage (New York: W. W. Norton, 1992) for an extensive treatment of lie detection techniques and their limits).
For the utility of self-deception in the case of health see Richard S. Lazarus's "Positive Denial: The Case for not Facing Reality."Interviewed by Daniel Goleman in Psychology Today, November 1979,pp. 44ff.
For an example of this in Plato see his Republic; for Saul Rosenzweig's approach, see his "Background to Idiodynamics" in The Clinical Psychologist, 1986, 39: 83-89.
Sartre's analysis of bad faith can be found in Being and Nothingness.
M. Kagan, for PHL 403, Le Moyne College; last revised September, 2018.