Ideas from 'Explanation and Reference' by Hilary Putnam [1973], by Theme Structure

[found in 'Mind Language and Reality: Papers vol 2' by Putnam,Hilary [CUP 1975,0-521-10668-5]].

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5. Theory of Logic / F. Referring in Logic / 1. Naming / a. Names
Using proper names properly doesn't involve necessary and sufficient conditions
9. Objects / D. Essence of Objects / 5. Essence as Kind
Putnam bases essences on 'same kind', but same kinds may not share properties
14. Science / B. Scientific Theories / 2. Aim of Science
Science aims at truth, not at 'simplicity'
19. Language / D. Theories of Reference / 3. Direct Reference / b. Causal reference
I now think reference by the tests of experts is a special case of being causally connected
26. Natural Theory / B. Concepts of Nature / 6. Natural Kinds / f. Reference to natural kinds
Express natural kinds as a posteriori predicate connections, not as singular terms
Natural kind stereotypes are 'strong' (obvious, like tiger) or 'weak' (obscure, like molybdenum)