Combining Texts

All the ideas for 'fragments/reports', 'Letters to Jourdain' and 'Goodbye Descartes'

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19 ideas

1. Philosophy / B. History of Ideas / 5. Later European Thought

8092	Logic was merely a branch of rhetoric until the scientific 17th century [Devlin]

4. Formal Logic / A. Syllogistic Logic / 2. Syllogistic Logic

8081	'No councillors are bankers' and 'All bankers are athletes' implies 'Some athletes are not councillors' [Devlin]

4. Formal Logic / B. Propositional Logic PL / 1. Propositional Logic

8085	Modern propositional inference replaces Aristotle's 19 syllogisms with modus ponens [Devlin]

4. Formal Logic / B. Propositional Logic PL / 2. Tools of Propositional Logic / e. Axioms of PL

8086	Predicate logic retains the axioms of propositional logic [Devlin]

5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic

8091	Situation theory is logic that takes account of context [Devlin]

5. Theory of Logic / A. Overview of Logic / 2. History of Logic

8087	Golden ages: 1900-1960 for pure logic, and 1950-1985 for applied logic [Devlin]

8089	Montague's intensional logic incorporated the notion of meaning [Devlin]

5. Theory of Logic / B. Logical Consequence / 7. Strict Implication

8082	Where a conditional is purely formal, an implication implies a link between premise and conclusion [Devlin]

5. Theory of Logic / E. Structures of Logic / 1. Logical Form

8072	Sentences of apparent identical form can have different contextual meanings [Devlin]

5. Theory of Logic / F. Referring in Logic / 1. Naming / a. Names

8447	In 'Etna is higher than Vesuvius' the whole of Etna, including all the lava, can't be the reference [Frege]

5. Theory of Logic / F. Referring in Logic / 1. Naming / b. Names as descriptive

8448	Any object can have many different names, each with a distinct sense [Frege]

5. Theory of Logic / L. Paradox / 4. Paradoxes in Logic / a. Achilles paradox

8075	Space and time are atomic in the arrow, and divisible in the tortoise [Devlin]

13. Knowledge Criteria / E. Relativism / 5. Language Relativism

8088	People still say the Hopi have no time concepts, despite Whorf's later denial [Devlin]

19. Language / A. Nature of Meaning / 7. Meaning Holism / a. Sentence meaning

8446	We understand new propositions by constructing their sense from the words [Frege]

19. Language / B. Reference / 4. Descriptive Reference / a. Sense and reference

8449	Senses can't be subjective, because propositions would be private, and disagreement impossible [Frege]

19. Language / C. Assigning Meanings / 1. Syntax

8073	How do we parse 'time flies like an arrow' and 'fruit flies like an apple'? [Devlin]

19. Language / D. Propositions / 2. Abstract Propositions / a. Propositions as sense

8076	The distinction between sentences and abstract propositions is crucial in logic [Devlin]

26. Natural Theory / A. Speculations on Nature / 5. Infinite in Nature

1748	Archelaus was the first person to say that the universe is boundless [Archelaus, by Diog. Laertius]

27. Natural Reality / G. Biology / 3. Evolution

5989	Archelaus said life began in a primeval slime [Archelaus, by Schofield]