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Are the results objected to upon the score of being imperfect, or in some respects unreliable? Let the objection be admitted, and is it necessary to grope in absolute darkness because it is impossible to have absolute truth? If the census of a people, for example, cannot be received implicitly, does it become proper and right to have no data whatever? Are men acting on this principle in other matters? Is not a large and valuable mass of human knowledge derived entirely from approximations?2
Walter Dean Burnham (Wed,) studied this question.