Thus, even if we accept that the people are deviously neurotic rather than outright irrational, we still must specify exactly how they believe that t… - Robyn Dawes

If we reject the idea of the “intrinsic rationality of whatever we do” (at least if we are not some sort of superb expert or monstrous political leader), then we must value scrutiny, which brings me to my final point: the necessity and value of a free society. When we scrutinize arguments, we often do so in a collective way….
If disagreement can lead to the presentation of one’s remains in a body bag to one’s spouse, this type of scrutiny is horribly constrained. Such constraint in turn implies that irrational conclusions will go unchallenged, and again because irrationality implies impossibility, that lack of challenge in turn implies belief in false conclusions. Such belief harms both societies and individuals.

The situation is very simple. Familiarity leads to availability and often to accuracy as well; hence availability is used as a cue to accuracy.
The problem is that mere assertion and repetition also leads to availability, whether or not this assertion and repetition involve reality, as familiarity generally does. Thus, the “big lie” of Nazi propaganda minister Joseph Goebbels was based on the idea that if something is repeated often enough, people will believe it—in large part simply because they have heard it before…
Goebbels apparently believed that providing a credible source, for him the German national government, was a critical component in having the repeated statements believed. Subsequent research has shown that the credibility of a source is not a necessary condition to develop beliefs…
Worse yet, mere repetition—which creates an availability bias due to familiarity, can also make people confident of their own decision making in the absence of any feedback that they have made good decisions.

Finally, the irrationality resulting from incomplete specification can be affected by emotions in a very simple way. If the conclusion is consistent with our desires or needs, the specification may not be examined in detail—in particular, not examined for its incompleteness. How often, when we conclude what we wish to conclude, do we then decide to subject our conclusion to detailed scrutiny? On the other hand, when the conclusion is one that contradicts our wishes and needs, then clearly there is a motive to examine our logic. Then we reconsider or even restructure the possibilities, question whether we have examined them all, and so on.