Combining Texts

All the ideas for 'On Motion', 'The Philosophical Culture' and 'Why Propositions Aren't Truth-Supporting Circumstance'

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4 ideas

1. Philosophy / G. Scientific Philosophy / 3. Scientism
Modern philosophy tends to be a theory-constructing extension of science, but there is also problem-solving [Nagel]
     Full Idea: Philosophy is now dominated by a spirit of theory construction which sees philosophy as continuous with science, but the other problem-centred style is still in existence and it is important to keep it alive.
     From: Thomas Nagel (The Philosophical Culture [1995], §6)
19. Language / C. Assigning Meanings / 2. Semantics
Semantics as theory of meaning and semantics as truth-based logical consequence are very different [Soames]
     Full Idea: There are two senses of 'semantic' - as theory of meaning or as truth-based theory of logical consequence, and they are very different.
     From: Scott Soames (Why Propositions Aren't Truth-Supporting Circumstance [2008], p.78)
     A reaction: This subtle point is significant in considering the role of logic in philosophy. The logicians' semantics (based on logical consequence) is in danger of ousting the broader and more elusive notion of meaning in natural language.
19. Language / C. Assigning Meanings / 6. Truth-Conditions Semantics
Semantic content is a proposition made of sentence constituents (not some set of circumstances) [Soames]
     Full Idea: The semantic content of a sentence is not the set of circumstances supporting its truth. It is rather the semantic content of a structured proposition the constituents of which are the semantic contents of the constituents of the sentence.
     From: Scott Soames (Why Propositions Aren't Truth-Supporting Circumstance [2008], p.74)
     A reaction: I'm not sure I get this, but while I like the truth-conditions view, I am suspicious of any proposal that the semantic content of something is some actual physical ingredients of the world. Meanings aren't sticks and stones.
27. Natural Reality / B. Modern Physics / 1. Relativity / a. Special relativity
Motion is not absolute, but consists in relation [Leibniz]
     Full Idea: In reality motion is not something absolute, but consists in relation.
     From: Gottfried Leibniz (On Motion [1677], A6.4.1968), quoted by Daniel Garber - Leibniz:Body,Substance,Monad 3
     A reaction: It is often thought that motion being relative was invented by Einstein, but Leibniz wholeheartedly embraced 'Galilean relativity', and refused to even consider any absolute concept of motion. Acceleration is a bit trickier than velocity.