If dialectical thinking is a sign of high intelligence, then why does the concept of cognitive dissonance exist?
According to F. Scott Fitzgerald, a test of first rate intelligence is the mental capacity to hold two diametrically opposed viewpoints, and still being able to cognitively function. Whereas the concept of ‘Cognitive Dissonance’ describes a situation where one reaches mental distress due to two conflicting thoughts residing in their minds, especially when your actions do not match your values.
How different are these two concepts? and could they be related in one way or another? Isn’t cognitive dissonance the default when two contradictory thoughts are held at the same time that causes mental discomfort? So then how could one possibly be able to entertain dialectical thinking, or is that a skill that needs to be mastered?