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Those who are guilty of the argumentum ad ignorantiam profess belief in something because its opposite cannot be proved ... In the realm where "prejudice" is now most an issue, it normally takes a form like this: you cannot prove by the method of statistics and quantitative measurement that men are not equal. Therefore all men are equal. ... You cannot prove again by the methods of science that one culture is higher than another. Therefore the culture of the Digger Indians is just a good as that of Muncie, Indiana, or thirteenth-century France.