Grobman's book Denying History has been described as serving to "remind us the past is not entirely negotiable" that, "Good historians can uncover and explain the past with provisional certainty - if they account for personal and cultural bias, and that it can be established beyond any reasonable doubt that the holocaust was real.[1]
According to CNN ". . . Shermer and Grobman do more than just refute ridiculous allegations. They also use the example of Holocaust denial literature to examine free speech issues, the psychology of right-wing extremists, and the role of biases in historical research."[3]