makes equal claim to each proof, since they are both correct, so the question of the limits of time must be regarded as meaningless. This was part of Kant's critical program of determining limits to science and philosophical inquiry. These contradictions are inherent in reason when it is applied to the world as it is in itself, independently of any perception of it (this has to do with the distinction between phenomena and noumena). Kant's goal in his critical philosophy was to identify what claims are and are not justified, and the antinomies are a particularly illustrative example of his larger project. Marx's use In Das Kapital, Volume I in the chapter entitled "The Working Day", Karl Marx claims that capitalist production sustains "the assertion of a right to an unlimited working day, and the assertion of a right to a limited working day, both with equal justification". Furner emphasizes that the thesis and antithesis of this antinomy are not contradictory opposites, but rather "consist in the assertion of rights to states of affairs that are contradictory opposites". See also Mutual incompatibility Law: Alternative pleading Logic: Mutual exclusivity Kettle logic Paradox Religion: Antinomianism (Christianity) Others: Oxymoron Double bind References External links Kantianism Concepts in logic