Combining Philosophers

All the ideas for Verity Harte, Roy Ellen and Robin Waterfield

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13 ideas

2. Reason / F. Fallacies / 7. Ad Hominem
15842 An ad hominem refutation is reasonable, if it uses the opponent's assumptions [Harte,V]
4. Formal Logic / G. Formal Mereology / 1. Mereology
15841 Mereology began as a nominalist revolt against the commitments of set theory [Harte,V]
6. Mathematics / C. Sources of Mathematics / 10. Constructivism / b. Intuitionism
9548 A mathematical object exists if there is no contradiction in its definition [Waterfield]
7. Existence / B. Change in Existence / 1. Nature of Change
15858 Traditionally, the four elements are just what persists through change [Harte,V]
7. Existence / E. Categories / 1. Categories
10496 Monothetic categories have fixed defining features, and polythetic categories do not [Ellen]
10497 In symbolic classification, the categories are linked to rules [Ellen]
7. Existence / E. Categories / 2. Categorisation
10494 Several words may label a category; one word can name several categories; some categories lack words [Ellen]
7. Existence / E. Categories / 5. Category Anti-Realism
10495 Continuous experience sometimes needs imposition of boundaries to create categories [Ellen]
9. Objects / C. Structure of Objects / 6. Constitution of an Object
15848 Mereology treats constitution as a criterion of identity, as shown in the axiom of extensionality [Harte,V]
9. Objects / C. Structure of Objects / 8. Parts of Objects / b. Sums of parts
15837 What exactly is a 'sum', and what exactly is 'composition'? [Harte,V]
15839 If something is 'more than' the sum of its parts, is the extra thing another part, or not? [Harte,V]
15838 The problem with the term 'sum' is that it is singular [Harte,V]
13. Knowledge Criteria / E. Relativism / 4. Cultural relativism
10498 Classification is no longer held to be rooted in social institutions [Ellen]