# PHL232H1 Lecture Notes - If And Only If

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Published on 31 Oct 2011
School
Department
Course
Professor
Knowledge and Reality Lecture
October 31, 2011
Causation: Regularity theories
A causes B iff A is necessary for B does not work
A causes B iff the occurrence of A is sufficient for the occurrence
of B- does not always work; ex. Striking a match causes a fire,
but not in all situations where a match is struck does it cause a
fire, so that means it is not sufficient for a fire
Mackie’s View
Causation is to be explained in terms of the notion of an INUS
condition
Insufficient but necessary part of an unnecessary but sufficient
condition
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## Document Summary

Causation: regularity theories: a causes b iff a is necessary for b does not work, a causes b iff the occurrence of a is sufficient for the occurrence of b- does not always work; ex. Striking a match causes a fire, but not in all situations where a match is struck does it cause a fire, so that means it is not sufficient for a fire. Mackie"s view: causation is to be explained in terms of the notion of an inus condition.

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