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Abductive Fallacy


Abductive Fallacy / Retroduction Fallacy / Retroductive Fallacy

The Abductive Fallacy / Retroduction Fallacy / Retroductive Fallacy occurs when a best-in-field fallacy is committed and presented as a deduction. The conclusion of a good abductive argument is merely the best explanation we know of. Who gets to define best? If abduction is presented as deduction, a lie has been told.

Examples of the Abductive Fallacy / Retroduction Fallacy / Retroductive Fallacy

Bill Nye arguing against Creation science: "So, as the world changed, as it did for the ancient dinosaurs, they were taken out by a worldwide fireball. Apparently caused by an impact. That’s the best theory we have. And we are the result of organisms that lived through that catastrophe."

This is a best-in-field fallacy that even admits that the fallacy is being used. "That’s the best theory we have." Generally, fallacies are hidden a little bit better than this. What makes this an abductive fallacy is the conclusion: "And we are the result of organisms that lived through that catastrophe." This conclusion falsely implies that the best-in-field fallacy is a sound bases for the premise, "So, as the world changed, as it did for the ancient dinosaurs, they were taken out by a worldwide fireball. Apparently caused by an impact." Yet, a fallacy cannot prove anything. So, this is a bit of a magic trick.


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