QUOTE(SpikeMarlene @ Aug 16 2010, 03:49 PM)
I would somewhat disagree with carl sagan. Why? Absence of evidence is evidence of absence when you are expecting it. If you would apply this quote on something that is completely unknown, which you cannot anticipate the outcome from absence of evidence, then it is reasonable to say we do not know what this means, hence we cannot rule out it's existence.
However for example, a suspect was found bleeding with cut wound on his finger and he was accused of fighting with the victim which he denied. You expect to find traces of the suspect's blood at the crime scene and on the victim's bloodied clothing but you found none that belongs to the suspect. In this case absence of evidence is evidence of absence when you are expecting it.
But according to your example, wouldn't it also mean that the suspect may have cleaned all his traces to avoid suspicion?However for example, a suspect was found bleeding with cut wound on his finger and he was accused of fighting with the victim which he denied. You expect to find traces of the suspect's blood at the crime scene and on the victim's bloodied clothing but you found none that belongs to the suspect. In this case absence of evidence is evidence of absence when you are expecting it.
Aug 16 2010, 04:01 PM

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