John is normal. But John also thinks there is something wrong with him. Because he thinks there is something wrong with him despite that not being the case, he has a delusion. But because he has a delusion, he is therefore not normal.
P1: John is normal.
P2: John thinks there is something wrong with him.
P3: Thinking there is something wrong with you when there is in fact nothing wrong with you is delusional.
C: Therefore, John is not normal (because he has a delusion).
It seems that John’s being normal is crucial to his not being normal. What do you make of this supposed paradox?
I think this is somewhat related to the interesting number paradox.