Here's a paradox I came up with.
Mr. X has read an article about schizophrenia from Wikipedia and is 100% certain that he is suffering from delusions. However, everyone else thinks that this is not the case and that mr. X is doing just fine.
Now, is mr. X delusional or not?
Yes he is
He might be delusional yet not have schizophrenia. Maybe he's just very hypochondric or something.
Or maybe he's just hallucinating that everyone else tells him he's fine.
Computer time is over OP, get back to your solitary confinement cell now please.