Whereas liars deliberately distort the truth, bullshitters have no interest in whether what they say is true or not, and so are the more dangerous to truth. This is one of the core findings by Harry G. Frankfurt (moral philosophy, Princeton U.) in his 2005 volume On Bullshit. Here scholars of philosophy take up his challenge to consider the nature, incidence, and significance of the phenomenon. They consider rethinking and responding to it; defining it; and its appearance in politics, science, education, and the law. Annotation ©2007 Book News, Inc., Portland, OR (booknews.com)