Difference between revisions of "Law of the excluded middle"

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In classical logic, this principle for a proposition A would be A V ~A.
 
In classical logic, this principle for a proposition A would be A V ~A.
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== Usage in Creation/Evolution Debate ==
 
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The law of the excluded middle is invoked in the creation/evolution debate.
 
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Evolutionists sometimes attempt to dismiss counter-evidence to evolution and abiogenesis, claiming that this should not be taken as evidence for special creation.  Creationists point out that either life either began naturally or supernaturally; there is no middle option.  This means that evidence against the naturalistic explanation (evolution) is necessarily evidence in favour of the supernatural explanation (creation).
 
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[[category:logic]]
 
[[category:logic]]

Revision as of 20:54, January 16, 2009

The law of the excluded middle is a principle in modern logic that means something is either true or it is false. There is no "middle" between true and false.

In classical logic, this principle for a proposition A would be A V ~A.

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