Combining Texts

All the ideas for 'Formal and Material Consequence', 'Knowledge by Acquaintance and Description-1' and 'What We Owe to Each Other'

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10 ideas

5. Theory of Logic / A. Overview of Logic / 4. Pure Logic
14187 If logic is topic-neutral that means it delves into all subjects, rather than having a pure subject matter [Read]
5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence
14188 Not all arguments are valid because of form; validity is just true premises and false conclusion being impossible [Read]
14182 If the logic of 'taller of' rests just on meaning, then logic may be the study of merely formal consequence [Read]
14183 Maybe arguments are only valid when suppressed premises are all stated - but why? [Read]
5. Theory of Logic / B. Logical Consequence / 5. Modus Ponens
14184 In modus ponens the 'if-then' premise contributes nothing if the conclusion follows anyway [Read]
5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives
14186 Logical connectives contain no information, but just record combination relations between facts [Read]
8. Modes of Existence / D. Universals / 2. Need for Universals
21710 We know a universal in 'yellow differs from blue' or 'yellow resembles blue less than green does' [Russell]
10. Modality / B. Possibility / 8. Conditionals / d. Non-truthfunction conditionals
14185 Conditionals are just a shorthand for some proof, leaving out the details [Read]
12. Knowledge Sources / B. Perception / 4. Sense Data / d. Sense-data problems
8854 My 'acquaintance' with sense-data is nothing like my knowing New York [Williams,M on Russell]
23. Ethics / B. Contract Ethics / 9. Contractualism
20992 Right and wrong concerns what other people cannot reasonably reject [Scanlon]