The authors give the history of their personal interest in
political extremism. Recognizing their fallibility, and inability to claim "anything approaching complete
objectivity", the authors attempted to "make an honest and diligent attempt to be fair and even-handed in our treatment of this subject." Distinguishing this book from the many covering "extremism" or "extremists" on the market (with their own agenda "to provide a rationale for persecuting or doing away with certain 'extremists'"), the authors' goal was "to provide understanding of a human problem, not a basis for one more round of persecutions." The authors propose a definition of "extremism" based on "the behavioral model" ("defined in terms of certain behaviors, particularly behavior toward other human beings"), passing up the "normative or "
statistical" way" (framing the spectrum on a linear scale, a "
bell curve") and the "
popularity contest" theory ("social definition agreed upon by collective
fiat"). The authors describe their position on the
political spectrum as "a bit difficult to pin down"; they "might be most accurately described as
pragmatists with
libertarian tendencies." == Publication history ==