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===Reality at the Threshold of Logic===
===Reality at the Threshold of Logic===
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<p>But no science can rest entirely on measurement, and many scientific investigations are quite out of reach of that device. To the scientist longing for non-quantitative techniques, then, mathematical logic brings hope.</p>
<p>But no science can rest entirely on measurement, and many scientific investigations are quite out of reach of that device. To the scientist longing for non-quantitative techniques, then, mathematical logic brings hope.</p>
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| align="right" colspan="3" | — W.V. Quine, ''Mathematical Logic'', [Qui, 7]
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===Tables of Propositional Forms===
===Tables of Propositional Forms===
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<p>To the scientist longing for non-quantitative techniques, then, mathematical logic brings hope. It provides explicit techniques for manipulating the most basic ingredients of discourse.</p>
<p>To the scientist longing for non-quantitative techniques, then, mathematical logic brings hope. It provides explicit techniques for manipulating the most basic ingredients of discourse.</p>
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| align="right" colspan="3" | — W.V. Quine, ''Mathematical Logic'', [Qui, 7–8]
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==A Differential Extension of Propositional Calculus==
==A Differential Extension of Propositional Calculus==