Ideas from 'Explanatory Coherence' by Paul Thagard [1989], by Theme Structure

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14. Science / D. Explanation / 2. Types of Explanation / c. Explanations by coherence
1: Coherence is a symmetrical relation between two propositions
2: An explanation must wholly cohere internally, and with the new fact
3: If an analogous pair explain another analogous pair, then they all cohere
4: For coherence, observation reports have a degree of intrinsic acceptability
5: Contradictory propositions incohere
6: A proposition's acceptability depends on its coherence with a system