Combining Texts

All the ideas for 'fragments/reports', 'Understanding the Infinite' and 'The Rediscovery of the Mind'

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95 ideas

3. Truth / C. Correspondence Truth / 1. Correspondence Truth
Correspondence to the facts HAS to be the aim of enquiry [Searle]
4. Formal Logic / F. Set Theory ST / 1. Set Theory
Second-order set theory just adds a version of Replacement that quantifies over functions [Lavine]
4. Formal Logic / F. Set Theory ST / 2. Mechanics of Set Theory / b. Terminology of ST
An 'upper bound' is the greatest member of a subset; there may be several of these, so there is a 'least' one [Lavine]
4. Formal Logic / F. Set Theory ST / 3. Types of Set / a. Types of set
Collections of things can't be too big, but collections by a rule seem unlimited in size [Lavine]
4. Formal Logic / F. Set Theory ST / 3. Types of Set / d. Infinite Sets
Those who reject infinite collections also want to reject the Axiom of Choice [Lavine]
4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / g. Axiom of Powers VI
The Power Set is just the collection of functions from one collection to another [Lavine]
4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / h. Axiom of Replacement VII
Replacement was immediately accepted, despite having very few implications [Lavine]
4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / i. Axiom of Foundation VIII
Foundation says descending chains are of finite length, blocking circularity, or ungrounded sets [Lavine]
4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / j. Axiom of Choice IX
Pure collections of things obey Choice, but collections defined by a rule may not [Lavine]
The controversy was not about the Axiom of Choice, but about functions as arbitrary, or given by rules [Lavine]
4. Formal Logic / F. Set Theory ST / 5. Conceptions of Set / c. Logical sets
The 'logical' notion of class has some kind of definition or rule to characterise the class [Lavine]
4. Formal Logic / F. Set Theory ST / 5. Conceptions of Set / e. Iterative sets
The iterative conception of set wasn't suggested until 1947 [Lavine]
The iterative conception needs the Axiom of Infinity, to show how far we can iterate [Lavine]
The iterative conception doesn't unify the axioms, and has had little impact on mathematical proofs [Lavine]
4. Formal Logic / F. Set Theory ST / 5. Conceptions of Set / f. Limitation of Size
Limitation of Size: if it's the same size as a set, it's a set; it uses Replacement [Lavine]
4. Formal Logic / F. Set Theory ST / 6. Ordering in Sets
A collection is 'well-ordered' if there is a least element, and all of its successors can be identified [Lavine]
5. Theory of Logic / A. Overview of Logic / 7. Second-Order Logic
Second-order logic presupposes a set of relations already fixed by the first-order domain [Lavine]
5. Theory of Logic / D. Assumptions for Logic / 2. Excluded Middle
Mathematical proof by contradiction needs the law of excluded middle [Lavine]
6. Mathematics / A. Nature of Mathematics / 1. Mathematics
Mathematics is nowadays (thanks to set theory) regarded as the study of structure, not of quantity [Lavine]
6. Mathematics / A. Nature of Mathematics / 3. Nature of Numbers / b. Types of number
Every rational number, unlike every natural number, is divisible by some other number [Lavine]
6. Mathematics / A. Nature of Mathematics / 3. Nature of Numbers / g. Real numbers
For the real numbers to form a set, we need the Continuum Hypothesis to be true [Lavine]
6. Mathematics / A. Nature of Mathematics / 3. Nature of Numbers / h. Reals from Cauchy
Cauchy gave a necessary condition for the convergence of a sequence [Lavine]
6. Mathematics / A. Nature of Mathematics / 3. Nature of Numbers / i. Reals from cuts
The two sides of the Cut are, roughly, the bounding commensurable ratios [Lavine]
6. Mathematics / A. Nature of Mathematics / 4. Using Numbers / c. Counting procedure
Counting results in well-ordering, and well-ordering makes counting possible [Lavine]
6. Mathematics / A. Nature of Mathematics / 5. The Infinite / a. The Infinite
The infinite is extrapolation from the experience of indefinitely large size [Lavine]
The theory of infinity must rest on our inability to distinguish between very large sizes [Lavine]
6. Mathematics / A. Nature of Mathematics / 5. The Infinite / c. Potential infinite
The intuitionist endorses only the potential infinite [Lavine]
6. Mathematics / A. Nature of Mathematics / 5. The Infinite / f. Uncountable infinities
'Aleph-0' is cardinality of the naturals, 'aleph-1' the next cardinal, 'aleph-ω' the ω-th cardinal [Lavine]
6. Mathematics / A. Nature of Mathematics / 5. The Infinite / h. Ordinal infinity
Ordinals are basic to Cantor's transfinite, to count the sets [Lavine]
Paradox: the class of all ordinals is well-ordered, so must have an ordinal as type - giving a bigger ordinal [Lavine]
6. Mathematics / A. Nature of Mathematics / 5. The Infinite / i. Cardinal infinity
Paradox: there is no largest cardinal, but the class of everything seems to be the largest [Lavine]
6. Mathematics / B. Foundations for Mathematics / 6. Mathematics as Set Theory / a. Mathematics is set theory
Set theory will found all of mathematics - except for the notion of proof [Lavine]
6. Mathematics / C. Sources of Mathematics / 1. Mathematical Platonism / b. Against mathematical platonism
Modern mathematics works up to isomorphism, and doesn't care what things 'really are' [Lavine]
6. Mathematics / C. Sources of Mathematics / 10. Constructivism / b. Intuitionism
Intuitionism rejects set-theory to found mathematics [Lavine]
7. Existence / C. Structure of Existence / 2. Reduction
Reduction can be of things, properties, ideas or causes [Searle]
7. Existence / C. Structure of Existence / 5. Supervenience / c. Significance of supervenience
Solidity in a piston is integral to its structure, not supervenient [Maslin on Searle]
Is supervenience just causality? [Searle, by Maslin]
7. Existence / D. Theories of Reality / 6. Physicalism
Reality is entirely particles in force fields [Searle]
8. Modes of Existence / B. Properties / 7. Emergent Properties
Some properties depend on components, others on their relations [Searle]
Fully 'emergent' properties contradict our whole theory of causation [Searle]
9. Objects / C. Structure of Objects / 6. Constitution of an Object
If someone squashed a horse to make a dog, something new would now exist [Mnesarchus]
11. Knowledge Aims / A. Knowledge / 4. Belief / e. Belief holism
Beliefs only make sense as part of a network of other beliefs [Searle]
Beliefs are part of a network, and also exist against a background [Searle]
12. Knowledge Sources / B. Perception / 5. Interpretation
Perception is a function of expectation [Searle]
12. Knowledge Sources / E. Direct Knowledge / 4. Memory
Memory is mainly a guide for current performance [Searle]
15. Nature of Minds / A. Nature of Mind / 4. Other Minds / c. Knowing other minds
We don't have a "theory" that other people have minds [Searle]
15. Nature of Minds / A. Nature of Mind / 4. Other Minds / d. Other minds by analogy
Other minds are not inferred by analogy, but are our best explanation [Searle]
15. Nature of Minds / A. Nature of Mind / 5. Unity of Mind
We experience unity at an instant and across time [Searle]
15. Nature of Minds / B. Features of Minds / 1. Consciousness / b. Essence of consciousness
The mind experiences space, but it is not experienced as spatial [Searle]
15. Nature of Minds / B. Features of Minds / 1. Consciousness / d. Purpose of consciousness
Conscious creatures seem able to discriminate better [Searle]
15. Nature of Minds / B. Features of Minds / 2. Unconscious Mind
Unconscious thoughts are those capable of causing conscious ones [Searle]
Consciousness results directly from brain processes, not from some intermediary like information [Searle]
15. Nature of Minds / B. Features of Minds / 4. Intentionality / a. Nature of intentionality
Either there is intrinsic intentionality, or everything has it [Searle]
Water flowing downhill can be described as if it had intentionality [Searle]
Intentional phenomena only make sense within a background [Searle]
15. Nature of Minds / B. Features of Minds / 4. Intentionality / b. Intentionality theories
Intentionality is defined in terms of representation [Searle]
Consciousness is essential and basic to intentionality [Searle]
15. Nature of Minds / B. Features of Minds / 5. Qualia / b. Qualia and intentionality
Pain is not intentional, because it does not represent anything beyond itself [Searle]
16. Persons / C. Self-Awareness / 1. Introspection
Neither introspection nor privileged access makes sense [Searle]
Introspection is just thinking about mental states, not a special sort of vision [Searle]
16. Persons / C. Self-Awareness / 3. Limits of Introspection
I cannot observe my own subjectivity [Searle]
17. Mind and Body / A. Mind-Body Dualism / 2. Interactionism
Mind and brain don't interact if they are the same [Searle]
17. Mind and Body / A. Mind-Body Dualism / 7. Zombies
Without internal content, a zombie's full behaviour couldn't be explained [Searle]
17. Mind and Body / B. Behaviourism / 4. Behaviourism Critique
Wanting H2O only differs from wanting water in its mental component [Searle]
Mental states only relate to behaviour contingently, not necessarily [Searle]
17. Mind and Body / C. Functionalism / 1. Functionalism
Functionalists like the externalist causal theory of reference [Searle]
17. Mind and Body / C. Functionalism / 7. Chinese Room
A program for Chinese translation doesn't need to understand Chinese [Searle]
17. Mind and Body / C. Functionalism / 8. Functionalism critique
Computation presupposes consciousness [Searle]
If we are computers, who is the user? [Searle]
17. Mind and Body / D. Property Dualism / 3. Property Dualism
Consciousness is a brain property as liquidity is a water property [Searle]
Property dualism denies reductionism [Searle]
Property dualism is the reappearance of Cartesianism [Searle]
Property dualists tend to find the mind-body problem baffling [Searle]
17. Mind and Body / D. Property Dualism / 5. Supervenience of mind
Upwards mental causation makes 'supervenience' irrelevant [Searle]
Mind and brain are supervenient in respect of cause and effect [Searle]
If mind-brain supervenience isn't causal, this implies epiphenomenalism [Searle]
Mental events can cause even though supervenient, like the solidity of a piston [Searle]
17. Mind and Body / D. Property Dualism / 6. Mysterianism
Consciousness seems indefinable by conditions or categories [Searle]
17. Mind and Body / E. Mind as Physical / 2. Reduction of Mind
Can the homunculus fallacy be beaten by recursive decomposition? [Searle]
Searle argues that biology explains consciousness, but physics won't explain biology [Searle, by Kriegel/Williford]
If mind is caused by brain, does this mean mind IS brain? [Searle]
17. Mind and Body / E. Mind as Physical / 7. Anti-Physicalism / b. Multiple realisability
If mind is multiply realisable, it is possible that anything could realise it [Searle]
18. Thought / A. Modes of Thought / 4. Folk Psychology
We don't postulate folk psychology, we experience it [Searle]
18. Thought / B. Mechanics of Thought / 6. Artificial Thought / b. Turing Machines
Computation isn't a natural phenomenon, it is a way of seeing phenomena [Searle]
18. Thought / C. Content / 1. Content
Content is much more than just sentence meaning [Searle]
18. Thought / C. Content / 6. Broad Content
There is no such thing as 'wide content' [Searle]
18. Thought / C. Content / 7. Narrow Content
We explain behaviour in terms of actual internal representations in the agent [Searle]
19. Language / A. Nature of Meaning / 1. Meaning
Meaning is derived intentionality [Searle]
19. Language / A. Nature of Meaning / 2. Meaning as Mental
Philosophy of language is a branch of philosophy of mind [Searle]
19. Language / C. Assigning Meanings / 1. Syntax
Universal grammar doesn't help us explain anything [Searle]
19. Language / F. Communication / 6. Interpreting Language / b. Indeterminate translation
Shared Background makes translation possible, though variation makes it hard [Searle]
22. Metaethics / B. Value / 2. Values / b. Successful function
The function of a heart depends on what we want it to do [Searle]
26. Natural Theory / A. Speculations on Nature / 2. Natural Purpose / c. Purpose denied
Chemistry entirely explains plant behaviour [Searle]
27. Natural Reality / G. Biology / 3. Evolution
Mind involves fighting, fleeing, feeding and fornicating [Searle]
28. God / A. Divine Nature / 4. Divine Contradictions
You can only know the limits of knowledge if you know the other side of the limit [Searle]