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Single Idea 15558

[filed under theme 14. Science / D. Explanation / 2. Types of Explanation / f. Necessity in explanations ]

Full Idea

It is said that a good explanation ought to show that the explanandum event had to happen, given the laws and circumstances.

Clarification

The 'explanandum' is the thing to be explained

Gist of Idea

A good explanation is supposed to show that the event had to happen

Source

David Lewis (Causal Explanation [1986], V)

Book Ref

Lewis,David: 'Philosophical Papers Vol.2' [OUP 1986], p.228


A Reaction

I cautiously go along with this view. Given that there are necessities in nature (a long story), we should aim to reveal them. There is no higher aspiration open to us than successful explanation. Lewis says good explanations can reveal falsehoods.


The 12 ideas from 'Causal Explanation'

Lewis endorses the thesis that all explanation of singular events is causal explanation [Lewis, by Psillos]
Ways of carving causes may be natural, but never 'right' [Lewis]
We only pick 'the' cause for the purposes of some particular enquiry. [Lewis]
Causal dependence is counterfactual dependence between events [Lewis]
To explain an event is to provide some information about its causal history [Lewis]
A disposition needs a causal basis, a property in a certain causal role. Could the disposition be the property? [Lewis]
Explaining match lighting in general is like explaining one lighting of a match [Lewis]
Science may well pursue generalised explanation, rather than laws [Lewis]
A good explanation is supposed to show that the event had to happen [Lewis]
Does a good explanation produce understanding? That claim is just empty [Lewis]
Verisimilitude has proved hard to analyse, and seems to have several components [Lewis]
We can explain a chance event, but can never show why some other outcome did not occur [Lewis]