Talk:Absence of evidence is not evidence of absence

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(response to very old (but still relevant) objection)
(Scientific investigation and deductive logic.)
 
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I don't agree with the example given for limited exploration not counting as evidence (as opposed to justification for a belief of a claim).  I think examining the shoreline and seeing no life is evidence of no life, but insufficient to make a definitive claim. --[[User:Zurahn|Zurahn]] 03:24, 15 July 2008 (CDT)
 
I don't agree with the example given for limited exploration not counting as evidence (as opposed to justification for a belief of a claim).  I think examining the shoreline and seeing no life is evidence of no life, but insufficient to make a definitive claim. --[[User:Zurahn|Zurahn]] 03:24, 15 July 2008 (CDT)
 
: The example doesn't (and didn't, when the comment above was made) claim that it isn't ''evidence''; it just says that making a conclusion on the basis of such flimsy evidence is not warranted. - [[User:Dcljr|dcljr]] 14:04, 5 November 2009 (CST)
 
: The example doesn't (and didn't, when the comment above was made) claim that it isn't ''evidence''; it just says that making a conclusion on the basis of such flimsy evidence is not warranted. - [[User:Dcljr|dcljr]] 14:04, 5 November 2009 (CST)
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== Scientific investigation and deductive logic. ==
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The note at the end of "Scientific investigation" is not strictly true. If H→P2, then ¬P2→¬H. There is a difference between not finding P2 and finding ¬P2. The article seems to be talking about the latter, but then claims that ¬H does not follow.

Latest revision as of 02:24, 27 December 2010

I don't agree with the example given for limited exploration not counting as evidence (as opposed to justification for a belief of a claim). I think examining the shoreline and seeing no life is evidence of no life, but insufficient to make a definitive claim. --Zurahn 03:24, 15 July 2008 (CDT)

The example doesn't (and didn't, when the comment above was made) claim that it isn't evidence; it just says that making a conclusion on the basis of such flimsy evidence is not warranted. - dcljr 14:04, 5 November 2009 (CST)

Scientific investigation and deductive logic.

The note at the end of "Scientific investigation" is not strictly true. If H→P2, then ¬P2→¬H. There is a difference between not finding P2 and finding ¬P2. The article seems to be talking about the latter, but then claims that ¬H does not follow.

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