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Intellectual debate should be conducted like a martial art. Boxers touch gloves before striking their first blows, and often hug when a match is over. Karate fighters bow, showing mutual respect and proud submission to their tradition. Such games involve serious risk, but are as much an art and a dance as a "fight" per se. All martial arts have rules against hitting below the belt, and specify serious consequences for unsportsmanlike conduct. Once upon a time, scholarship had a similar code of conduct, if not camaraderie, that involved disinterestedness, objectivity, self-effacement, and neutrality. In recent years, this has been criticized (sometimes with good reason) as an ideological mystification "naturalizing" racism, sexism, the covert pursuit of class interests, and political partisanship.* Regardless, I think that, at the very least, scholars of all stripes can and should work harder to be courteous, civilized, and to acknowledge their own biases without resorting to demagoguery.
Politics, schmolitics--we're humans first and ideologues second. If the 20th century taught us anything, it's that even the most apparently humane political ideologies can end up machine-gunning each other into a ditch. If humanities scholars, of all people, can't have a civil conversation, then we might as well all give up and go home to pursue biochemistry degrees or sell carpet cleaner and credit cards over the telephone.
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*"Argument," according to a related line of thinking, is symptomatic of patriarchal aggression and ought to be replaced by "discussion," wherein no one, presumably, attempts to advance a logical position with the aim of changing another's mind.
(Image from chas-ma.com.)