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3 ideas
18489 | Connectives link sentences without linking their meanings [MacBride] |
Full Idea: The 'connectives' are expressions that link sentences but without expressing a relation that holds between the states of affairs, facts or tropes that these sentences denote. | |
From: Fraser MacBride (Truthmakers [2013], 3.7) | |
A reaction: MacBride notes that these contrast with ordinary verbs, which do express meaningful relations. |
16489 | Is it possible to state every possible truth about the whole course of nature without using 'not'? [Russell] |
Full Idea: Imagine a person who knew everything that can be stated without using the word 'not' or some equivalent; would such a person know the whole course of nature, or would he not? | |
From: Bertrand Russell (Human Knowledge: its scope and limits [1948], 9) | |
A reaction: Nowadays we might express Russell's thought as 'Does God need the word 'not'?'. Russell's thesis is that such words concern psychology, and not physics. God would need 'not' to describe how human minds work. |
18476 | 'A is F' may not be positive ('is dead'), and 'A is not-F' may not be negative ('is not blind') [MacBride] |
Full Idea: Statements of the form 'a is F' aren't invariably positive ('a is dead'), and nor are statements of the form 'a isn't F' ('a isn't blind') always negative. | |
From: Fraser MacBride (Truthmakers [2013], 2.1.4) | |
A reaction: The point is that the negation may be implicit in the predicate. There are many ways to affirm or deny something, other than by use of the standard syntax. |