Description: Taking a statement of conversion as valid without actually hearing a reason for the conversion.
Logical Form:
I used to believe in X.
Therefore, X is wrong.
Example #1:
I used to be a Christian, now I know better.
Explanation: All this tells us is that the arguer changed his mind. We don’t know why. Accepting this as evidence against Christianity would be fallacious reasoning.
Example #2:
There used to be a time when I didn’t believe, now I see the light and have accepted Jesus as my savior!
Explanation: All this tells us is that the arguer changed his mind. We don’t know why. Accepting this as evidence for Christianity would be fallacious reasoning.
Exception: This could be connected to the argument from authority, where the person making the claim does make a difference based on their background.
