Combining Texts

All the ideas for 'works', 'Ambitious, yet modest, Metaphysics' and 'The Problem of Knowledge'

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11 ideas

1. Philosophy / E. Nature of Metaphysics / 5. Metaphysics beyond Science

16415	Esoteric metaphysics aims to be top science, investigating ultimate reality [Hofweber]
	Full Idea: Esoteric metaphysics appeals to those, I conjecture, who deep down hold that philosophy is the queen of sciences after all, since it investigates what the world is REALLY like.
	From: Thomas Hofweber (Ambitious, yet modest, Metaphysics [2009], 2)
	A reaction: He mentions Kit Fine and Jonathan Schaffer as esoteric metaphysicians. I see a pyramid of increasing generality and abstraction, with metaphysics at the top. This doesn't make it 'queen', though, because uncertainties multiply higher up.

1. Philosophy / E. Nature of Metaphysics / 7. Against Metaphysics

16413	Science has discovered properties of things, so there are properties - so who needs metaphysics? [Hofweber]
	Full Idea: Material science has found that some features of metals make them more susceptible to corrosion but more resistant to fracture. Thus this immediately implies that there are features, i.e. properties. What is left for metaphysics to do?
	From: Thomas Hofweber (Ambitious, yet modest, Metaphysics [2009], 1.1)
	A reaction: Presumably economists have discovered 'features' of economies that cause unemployment, and literary critics have discovered 'features' of novels that make them good.

2. Reason / F. Fallacies / 1. Fallacy

19463	Induction assumes some uniformity in nature, or that in some respects the future is like the past [Ayer]
	Full Idea: In all inductive reasoning we make the assumption that there is a measure of uniformity in nature; or, roughly speaking, that the future will, in the appropriate respects, resemble the past.
	From: A.J. Ayer (The Problem of Knowledge [1956], 2.viii)
	A reaction: I would say that nature is 'stable'. Nature changes, so a global assumption of total uniformity is daft. Do we need some global uniformity assumptions, if the induction involved is local? I would say yes. Are all inductions conditional on this?

5. Theory of Logic / G. Quantification / 1. Quantification

16416	The quantifier in logic is not like the ordinary English one (which has empty names, non-denoting terms etc) [Hofweber]
	Full Idea: The inferential role of the existential quantifier in first order logic does not carry over to the existential quantifier in English (we have empty names, singular terms that are not even in the business of denoting, and so on).
	From: Thomas Hofweber (Ambitious, yet modest, Metaphysics [2009], 2)

11. Knowledge Aims / B. Certain Knowledge / 5. Cogito Critique

19461	Knowing I exist reveals nothing at all about my nature [Ayer]
	Full Idea: To know that one exists is not to know anything about oneself any more than knowing that 'this' exists is knowing anything about 'this'.
	From: A.J. Ayer (The Problem of Knowledge [1956], 2.iii)
	A reaction: Descartes proceeds to define himself as a 'thinking thing', inferring that thinking is his essence. Ayer casts nice doubt on that.

19459	To say 'I am not thinking' must be false, but it might have been true, so it isn't self-contradictory [Ayer]
	Full Idea: To say 'I am not thinking' is self-stultifying since if it is said intelligently it must be false: but it is not self-contradictory. The proof that it is not self-contradictory is that it might have been false.
	From: A.J. Ayer (The Problem of Knowledge [1956], 2.iii)
	A reaction: If it doesn't imply a contradiction, then it is not a necessary truth, which is what it is normally taken to be. Is 'This is a sentence' necessarily true? It might not have been one, if the rules of English syntax changed recently.

19460	'I know I exist' has no counterevidence, so it may be meaningless [Ayer]
	Full Idea: If there is no experience at all of finding out that one is not conscious, or that one does not exist, ..it is tempting to say that sentences like 'I exist', 'I am conscious', 'I know that I exist' do not express genuine propositions.
	From: A.J. Ayer (The Problem of Knowledge [1956], 2.iii)
	A reaction: This is, of course, an application of the somewhat discredited verification principle, but the fact that strictly speaking the principle has been sort of refuted does not mean that we should not take it seriously, and be influenced by it.

14. Science / A. Basis of Science / 6. Falsification

19464	We only discard a hypothesis after one failure if it appears likely to keep on failing [Ayer]
	Full Idea: Why should a hypothesis which has failed the test be discarded unless this shows it to be unreliable; that is, having failed once it is likely to fail again? There is no contradiction in a hypothesis that was falsified being more likely to pass in future.
	From: A.J. Ayer (The Problem of Knowledge [1956], 2.viii)
	A reaction: People may become more likely to pass a test after they have failed at the first attempt. Birds which fail to fly at the first attempt usually achieve total mastery of it. There are different types of hypothesis here.

14. Science / C. Induction / 2. Aims of Induction

19462	Induction passes from particular facts to other particulars, or to general laws, non-deductively [Ayer]
	Full Idea: Inductive reasoning covers all cases in which we pass from a particular statement of fact, or set of them, to a factual conclusion which they do not formally entail. The inference may be to a general law, or by analogy to another particular instance.
	From: A.J. Ayer (The Problem of Knowledge [1956], 2.viii)
	A reaction: My preferred definition is 'learning from experience' - which I take to be the most rational behaviour you could possibly imagine. I don't think a definition should be couched in terms of 'objects' or 'particulars'.

29. Religion / B. Monotheistic Religion / 4. Christianity / d. Heresy

16713	Philosophers are the forefathers of heretics [Tertullian]
	Full Idea: Philosophers are the forefathers of heretics.
	From: Tertullian (works [c.200]), quoted by Robert Pasnau - Metaphysical Themes 1274-1671 20.2

29. Religion / D. Religious Issues / 1. Religious Commitment / e. Fideism

6610	I believe because it is absurd [Tertullian]
	Full Idea: I believe because it is absurd ('Credo quia absurdum est').
	From: Tertullian (works [c.200]), quoted by Robert Fogelin - Walking the Tightrope of Reason n4.2
	A reaction: This seems to be a rather desperate remark, in response to what must have been rather good hostile arguments. No one would abandon the support of reason if it was easy to acquire. You can't deny its engaging romantic defiance, though.