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Ideas for 'works', 'Is There a Marxist Doctrine?' and 'Introduction to Mathematical Philosophy'

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7. Existence / D. Theories of Reality / 7. Fictionalism

14429	Classes are logical fictions, made from defining characteristics [Russell]
	Full Idea: Classes may be regarded as logical fictions, manufactured out of defining characteristics.
	From: Bertrand Russell (Introduction to Mathematical Philosophy [1919], II n1)
	A reaction: I agree with this. The idea that in addition to the members there is a further object, the set containing them, is absurd. Sets are a tool for thinking about the world.