You can tell the interviewer actually understands the meaning of cognitive dissonance and tries to test whether the "Doc" understands what he is saying - and implying, before finally giving up and giving in: "So that's what cognitive dissonance is…"
I said in the original post that the "Doc" was disingenuous (dangerously so), but the more I think about it the more it seems actually diabolical.
Where are your graphs from?