Combining Texts
Ideas for
'Material Beings', 'An Inquiry into Meaning and Truth' and 'Nature Without Essence'
expand these ideas
|
start again
|
choose
another area for these texts
display all the ideas for this combination of texts
12 ideas
5. Theory of Logic / A. Overview of Logic / 4. Pure Logic
16486
|
The physical world doesn't need logic, but the mental world does [Russell]
|
5. Theory of Logic / D. Assumptions for Logic / 2. Excluded Middle
2947
|
Questions wouldn't lead anywhere without the law of excluded middle [Russell]
|
17587
|
The 'Law' of Excluded Middle needs all propositions to be definitely true or definitely false [Inwagen]
|
5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / e. or
16480
|
A disjunction expresses indecision [Russell]
|
16479
|
'Or' expresses hesitation, in a dog at a crossroads, or birds risking grabbing crumbs [Russell]
|
16481
|
'Or' expresses a mental state, not something about the world [Russell]
|
16487
|
Maybe the 'or' used to describe mental states is not the 'or' of logic [Russell]
|
16483
|
Disjunction may also arise in practice if there is imperfect memory. [Russell]
|
5. Theory of Logic / E. Structures of Logic / 4. Variables in Logic
17558
|
Variables are just like pronouns; syntactic explanations get muddled over dummy letters [Inwagen]
|
5. Theory of Logic / K. Features of Logics / 6. Compactness
17867
|
If a concept is not compact, it will not be presentable to finite minds [Almog]
|
5. Theory of Logic / L. Paradox / 6. Paradoxes in Language / b. The Heap paradox ('Sorites')
17583
|
There are no heaps [Inwagen]
|
5. Theory of Logic / L. Paradox / 6. Paradoxes in Language / c. Grelling's paradox
16475
|
A 'heterological' predicate can't be predicated of itself; so is 'heterological' heterological? Yes=no! [Russell]
|