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14. Science / D. Explanation / 2. Types of Explanation / a. Types of explanation

[picking out different styles of explanation]

34 ideas
Aristotelian explanations mainly divide things into natural kinds [Aristotle, by Politis]
     Full Idea: The search for explanation as Aristotle conceives it is the search for the correct way to distinguish things into natural kinds, which may involve revising our initial conceptions.
     From: report of Aristotle (Metaphysics [c.324 BCE], kind) by Vassilis Politis - Aristotle and the Metaphysics 2.2
     A reaction: Nowadays we would make the huge addition of objects and processes which are invisible to the naked eye, which Aristotle probably never envisaged. He is interested in categories, but we are also interested in mechanisms.
Four Explanations: the essence and form; the matter; the source; and the end [Aristotle, by Politis]
     Full Idea: Aristotle gives us four explanations (or causes) of things: the essence (to ti estin, to ti en einai) and the form (he morphe, to eidos); the matter (hule); the source of change and generation (to kinoun); and the end (telos) at which change is directed.
     From: report of Aristotle (Physics [c.337 BCE]) by Vassilis Politis - Aristotle and the Metaphysics 2.4
     A reaction: Politis presents these as primarily the Four Explanations, rather than under the better-known label of the 'Four Causes'. It is interesting that essence and form are lumped in together, under what is normally labelled the 'formal cause'.
Aristotle's four 'causes' are four items which figure in basic explanations of nature [Aristotle, by Annas]
     Full Idea: The four so-called 'causes' are the different types of item which figure in what Aristotle thinks are the four fundamental types of explanation of nature.
     From: report of Aristotle (Physics [c.337 BCE]) by Julia Annas - Ancient Philosophy: very short introduction Ch.5
     A reaction: This interpretation now seems to be standard among modern scholars. The word 'aitia' translates as 'explanation', but it is important to remember that it also translates as 'cause'. Aristotelian explanations are essentially causal.
There are as many causes/explanations as there are different types of why-question [Aristotle]
     Full Idea: There are causes [aition] and there are as many of them as we have been saying, since there are just as many different kinds of question covered by the question 'Why?'.
     From: Aristotle (Physics [c.337 BCE], 198a16)
     A reaction: He goes on to split the questions into 'what is it?' and 'what initiated the change?'. This, along with Idea 16969, is Exhibit A for saying Aristotle has the Four Explanations, not the Four Causes (which are so famous).
Science refers the question Why? to four causes/explanations: matter, form, source, purpose [Aristotle]
     Full Idea: If the natural scientist refers the question 'Why?' to this set of four causes [aition] - matter, form, source of change, purpose - he will be explaining things in the way a natural scientist should.
     From: Aristotle (Physics [c.337 BCE], 198a23)
     A reaction: This is even more conclusive than Idea 16968 in showing that we have the Four Modes of Explanation, not the so-called Four Causes.
Aristotle's standard analysis of species and genus involves specifying things in terms of something more general [Aristotle, by Benardete,JA]
     Full Idea: The standard Aristotelian doctrine of species and genus in the theory of anything whatever involves specifying what the thing is in terms of something more general.
     From: report of Aristotle (works [c.330 BCE]) by José A. Benardete - Metaphysics: the logical approach Ch.10
To the four causes Plato adds a fifth, the idea which guided the event [Seneca]
     Full Idea: To the four Aristotelian causes Plato adds a fifth in the model - what he himself calls the 'idea' - this being what the sculptor had constantly before his eyes as he executed the intended work.
     From: Seneca the Younger (Letters from a Stoic [c.60], 065)
     A reaction: A very interesting interpretation. I take the four 'causes' to be primarily the four 'explanations', and it exactly fits how we should understand Plato, as offer a crucial underlying explanation. The statue is Aristotle's example.
Nature is explained by mathematics and mechanism, but the laws rest on metaphysics [Leibniz]
     Full Idea: One must always explain nature along mathematical and mechanical lines, provided one knows that the very principles or laws of mechanics or of force do not depend upon mathematical extension alone but upon certain metaphysical reasons.
     From: Gottfried Leibniz (Letters to Antoine Arnauld [1686], 1686.07.4/14 X)
     A reaction: I like this, and may even use it as the epigraph of my masterwork. Recently Stephen Hawking (physicist) has been denigrating philosophy, but I am with Leibniz on this one.
The four explanations: objects by causes, concepts by ground, maths by spacetime, ethics by motive [Schopenhauer, by Lewis,PB]
     Full Idea: There are four forms of explanation, depending on their topic. Causes explain objects. Grounding explains concepts, Points and moments explain mathematics. Motives explain ethics.
     From: report of Arthur Schopenhauer (Fourfold Root of Princ of Sufficient Reason [1813], §43 p.214) by Peter B. Lewis - Schopenhauer 3
     A reaction: [My compression of Lewis's summary. I'm particularly pleased with this. I have done Schopenhauer a huge favour, should anyone ever visit this website]. The quirky account of mathematics derives from Kant. I greatly admire this whole idea.
Analytic explanation is wholes in terms of parts; synthetic is parts in terms of wholes or contexts [Belnap]
     Full Idea: Throughout the whole texture of philosophy we distinguish two modes of explanation: the analytic mode, which tends to explain wholes in terms of parts, and the synthetic mode, which explains parts in terms of the wholes or contexts in which they occur.
     From: Nuel D. Belnap (Tonk, Plonk and Plink [1962], p.132)
     A reaction: The analytic would be bottom-up, and the synthetic would be top-down. I'm inclined to combine them, and say explanation begins with a model, which can then be sliced in either direction, though the bottom looks more interesting.
The 'inferential' conception is that all scientific explanations are arguments [Salmon]
     Full Idea: The 'inferential' conception of scientific explanation is the thesis that all legitimate scientific explanations are arguments of one sort or another.
     From: Wesley Salmon (Four Decades of Scientific Explanation [1989], 1.1)
     A reaction: This seems to imply that someone has to be persuaded of something, and hence seems a rather too pragmatic view. I presume an explanation might be no more than dumbly pointing at conclusive evidence of a cause. Man with smoking gun.
Ontic explanations can be facts, or reports of facts [Salmon]
     Full Idea: Proponents of the ontic conception of explanation can say that explanations exist in the world as facts, or that they are reports of such facts (as opposed to the view of explanations as arguments, or as speech acts).
     From: Wesley Salmon (Four Decades of Scientific Explanation [1989], 3.2)
     A reaction: [compressed] I am strongly drawn to the ontic approach, but not sure whether we want facts, or reports of them. The facts are the causal nexus, but which parts of the nexus provide the main aspect of explanation? I'll vote for reports, for now.
The three basic conceptions of scientific explanation are modal, epistemic, and ontic [Salmon]
     Full Idea: There are three basic conceptions of scientific explanation - modal, epistemic, and ontic - which can be discerned in Aristotle, and that have persisted down the ages.
     From: Wesley Salmon (Four Decades of Scientific Explanation [1989], 4.1)
An explanation is a table of statistical information [Salmon, by Strevens]
     Full Idea: On Salmon's statistical relevance view, an explanation is a table of statistical information.
     From: report of Wesley Salmon (Statistical Explanation [1970]) by Michael Strevens - No Understanding without Explanation 1
     A reaction: [He cites W.Salmon 1970] When put like that the view sounds incredibly implausible, but maybe a reading of Salmon would improve the case for it.
A good reason for something (the smoke) is not an explanation of it (the fire) [Armstrong]
     Full Idea: A good reason for P is not necessarily an explanation of P. The presence of smoke is a good reason for thinking that fire is present. But it is not an explanation of the presence of fire.
     From: David M. Armstrong (What is a Law of Nature? [1983], 04.2)
     A reaction: This may be an equivocation on 'the reason for'. Smoke is a reason for thinking there is a fire, but no one would propose it as a reason for the fire. If the reason for the fire was arson, that would seem to explain it as well.
An explanation is often a deduction, but that may well beg the question [Dummett]
     Full Idea: An explanation is often a deductive argument, with the fact needing explaining as its conclusion. ...But the conclusion is usually given in advance, and we may only believe the premisses because they plausibly explain the conclusion.
     From: Michael Dummett (The Justification of Deduction [1973], p.296)
     A reaction: [compressed (Dummett's wordy prose cries out for it!)] I suppose this works better in mathematics, which is central to Dummett's interests. In the real world the puzzle is not usually logically implied by its explanation.
Follow maths for necessary truths, and jurisprudence for contingent truths [Hacking]
     Full Idea: Mathematics is the model for reasoning about necessary truths, but jurisprudence must be our model when we deliberate about contingencies.
     From: Ian Hacking (The Emergence of Probability [1975], Ch.10)
     A reaction: Interesting. Certainly huge thinking, especially since the Romans, has gone into the law, and creating rules of evidence. Maybe all philosophers should study law and mathematics?
Two main types of explanation are by causes, or by citing a theoretical framework [Cartwright,N]
     Full Idea: In explaining a phenomenon one can cite the causes of that phenomenon; or one can set the phenomenon in a general theoretical framework.
     From: Nancy Cartwright (How the Laws of Physics Lie [1983], 4.1)
     A reaction: The thing is, you need to root an explanation in something taken as basic, and theoretical frameworks need further explanation, whereas causes seem to be basic.
Most explanations are just sentences, not arguments [Ruben]
     Full Idea: Typically, full explanations are not arguments, but singular sentences, or conjunctions thereof.
     From: David-Hillel Ruben (Explaining Explanation [1990], Ch 6)
     A reaction: This is mainly objecting to the claim that explanations are deductions from laws and facts. I agree with Ruben. Explanations are just information, I think. Of course, Aristotle's demonstrations are arguments.
Beneath every extrinsic explanation there is an intrinsic explanation [Field,H]
     Full Idea: A plausible methodological principle is that underlying every good extrinsic explanation there is an intrinsic explanation.
     From: Hartry Field (Science without Numbers [1980], 5)
     A reaction: I'm thinking that Hartry Field is an Aristotelian essentialist, though I bet he would never admit it.
Is there metaphysical explanation (as well as causal), involving a constitutive form of determination? [Fine,K]
     Full Idea: In addition to scientific or causal explanation, there maybe a distinctive kind of metaphysical explanation, in which explanans and explanandum are connected, not through some causal mechanism, but through some constitutive form of determination.
     From: Kit Fine (Guide to Ground [2012], Intro)
     A reaction: I'm unclear why determination has to be 'constitutive', since I would take determination to be a family of concepts, with constitution being one of them, as when chess pieces determine a chess set. Skip 'metaphysical'; just have Determinative Explanation.
We explain by identity (what it is), or by truth (how things are) [Fine,K]
     Full Idea: I think it should be recognised that there are two fundamentally different types of explanation; one is of identity, or of what something is; and the other is of truth, or of how things are.
     From: Kit Fine (Guide to Ground [2012], 1.11)
In addition to causal explanations, they can also be inferential, or definitional, or purposive [Le Poidevin]
     Full Idea: Not all explanations are causal. We can explain some things by showing what follows logically from what, or what is required by the definition of a term, or in terms of purpose.
     From: Robin Le Poidevin (Travels in Four Dimensions [2003], 05 'Limits')
     A reaction: Would these fully qualify as 'explanations'? You don't explain the sea by saying that 'wet' is part of its definition.
Nomothetic explanations cite laws, and structural explanations cite mechanisms [Mumford]
     Full Idea: A nomothetic explanation appeals to laws where the explanandum is shown to be an instance of a general law. ...The alternative is a structural explanation, which postulates a mechanism, opening up a hidden world.
     From: Stephen Mumford (Dispositions [1998], 06.4)
     A reaction: [He cites E.McMullin 1978] I am very much in favour of structural explanations, and opposed to nomothetic ones. That is, nomothetic accounts are only the first step towards an explanation - perhaps a mere identification of the explanandum.
Explanation is either showing predictability, or showing necessity, or showing causal relations [Psillos]
     Full Idea: The three types of explanation are 'epistemic' (the event is expectable because of a law), or 'modal' (the event is necessary because of a law), or 'ontic' (it is shown how the event fits into the world's causal structure).
     From: Stathis Psillos (Causation and Explanation [2002], §11.1)
     A reaction: Prediction, necessity or causes. It is hard to think of any other way to explain something. Presumably you would exclude necessities if you didn't believe in them. Hume would go for prediction, on the basis of regularities. Personally, I want it all.
Explanations are causal, nomic, psychological, psychoanalytic, Darwinian or functional [Bird]
     Full Idea: Explanations can be classified as causal, nomic, psychological, psychoanalytic, Darwinian and functional.
     From: Alexander Bird (Philosophy of Science [1998], Ch.2)
     A reaction: These could be subdivided, perhaps according to different types of cause. Personally, being a reductionist (like David Lewis, see Idea 3989), I suspect that all of these explanations could be reduced to causation. Essences explain causes.
Evolutionary explanations look to the past or the group, not to the individual [Stout,R]
     Full Idea: In evolutionary explanations you may explain a population trait in terms of what it is for the sake of an individual, or explain it in terms of what it was for the sake of in earlier generations, but never in terms of what the trait is for the sake of.
     From: Rowland Stout (Action [2005], 2 'Functions')
     A reaction: So my ears are for the sake of my ability to hear, but that does not explain why I have ears. Should we say there is 'impersonal teleology' here, but no 'personal teleology'? Interesting.
Value, constitution and realisation are non-causal dependences that explain [Liggins]
     Full Idea: 'It is wrong because it produces pain for fun', and 'these constitute a table because they are arranged tablewise', and 'tea is poisonous because it contains arsenic' are clearly non-causal uses of 'because', and neither are they conceptual.
     From: David Liggins (Truth-makers and dependence [2012], 10.4)
     A reaction: The general line seems to be that any form of determination will underwrite an explanation. He talks later of the 'wrongmaker' and 'poisonmaker' relationships to add to the 'truthmaker'. The table example is the 'object-maker' dependence relation.
If explanations track dependence, then 'determinative' explanations seem to exist [Liggins]
     Full Idea: If explanation often tracks dependence, then we have a theoretical reason to expect such explanations to exist. Let us call such explanations 'determinative'.
     From: David Liggins (Truth-makers and dependence [2012], 10.4)
     A reaction: There seems to be an emerging understanding that this 'determination' relation is central to all of explanation - with causal explanations, for example, being a particular instance of it. I like it. These are real, not conventional, explanations.
Two things being identical (like water and H2O) is not an explanation [Audi,P]
     Full Idea: If there is identity between water and H2O, we have neither the asymmetry nor the irreflexivity that explanations require.
     From: Paul Audi (Clarification and Defense of Grounding [2012], 3.3)
     A reaction: Once you realise it is H2O, you understand its deeper features, which will open up new explanations. He's right, though.
There are 'conceptual' explanations, with their direction depending on complexity [Schnieder]
     Full Idea: The direction of conceptual explanations seems to be owed to factors of conceptual complexity and primitiveness.
     From: Benjamin Schnieder (Truth-making without Truth-makers [2006], p.33), quoted by David Liggins - Truth-makers and dependence 10.2
     A reaction: Schnieder proposes that there are just 'causal' and 'conceptual' explanations. Liggins objects that there are other types of dependence which offer explanations.
Explanations by disposition are more stable and reliable than those be external circumstances [Vetter]
     Full Idea: Patterns of behaviour may be explained by circumstances external to the individual, but dispositional explanations, based on the instrinsic make-up of individuals are typically more reliable and stable.
     From: Barbara Vetter (Potentiality [2015], 3.5)
     A reaction: [compressed] This is very nice support for the view I have been defending. She doesn't deal in essences, and prefers 'potentialities' (as broader) to 'dispositions'. The point is to explain events by the natures of the ingredients.
Grounding is a kind of explanation, suited to metaphysics [Vetter]
     Full Idea: Grounding is a kind of explanation - and specifically, the kind of metaphysical explanation that metaphysicians are after.
     From: Barbara Vetter (Potentiality [2015], 4.5)
     A reaction: Depending on how you interpret 'grounding', it is plausible that it is the sort of explanation that physicists and economists are after as well. If the aim is to understand the structure of everything, the target is to know what grounds what.
Some explanations offer to explain a mystery by a greater mystery [Schulte]
     Full Idea: An 'obscurum per obscurius' explanation is explaining something mysterious by something even more mysterious,
     From: Peter Schulte (Mental Content [2023], 6)
     A reaction: Schulte's example is trying to explain mental content in terms of phenomenal experience. That is, roughly, explaining content by qualia, when the latter is the 'hard problem'.