Combining Texts

All the ideas for 'Locke on Essences and Kinds', 'fragments/reports' and 'The Aim and Structure of Physical Theory'

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7 ideas

9. Objects / D. Essence of Objects / 13. Nominal Essence

15642

If kinds depend only on what can be observed, many underlying essences might produce the same kind [Eagle]

15645

Nominal essence are the observable properties of things [Eagle]

15643

Nominal essence mistakenly gives equal weight to all underlying properties that produce appearances [Eagle]

14. Science / A. Basis of Science / 6. Falsification

22137

Observation can force rejection of some part of the initial set of claims [Duhem, by Boulter]

14. Science / B. Scientific Theories / 6. Theory Holism

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Experiments only test groups of hypotheses, and can't show which one is wrong [Duhem]

20. Action / B. Preliminaries of Action / 2. Willed Action / d. Weakness of will

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Some reasonings are stronger than we are [Philolaus]

26. Natural Theory / B. Natural Kinds / 4. Source of Kinds

15641

Kinds are fixed by the essential properties of things - the properties that make it that kind of thing [Eagle]