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Ideas for 'fragments/reports', 'Unity of Science as a Working Hypothesis' and 'Chemistry'

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14. Science / D. Explanation / 2. Types of Explanation / j. Explanations by reduction

20653

Six reduction levels: groups, lives, cells, molecules, atoms, particles [Putnam/Oppenheim, by Watson]

14. Science / D. Explanation / 2. Types of Explanation / k. Explanations by essence

17481

Nuclear charge (plus laws) explains electron structure and spectrum, but not vice versa [Hendry]