I think folks can get hung up on the words "know", "think", and "believe", as proof of psychosis; but the real question is whether the irrational thought pattern is causing you distress or interfering with function.

The way I describe my paranoia, is that I completely believe "A", but I know it has no rational basis. I also know that the abilify mostly makes it go away. So basically, as long as I can act counter to what I believe, and take the med, the symptom should remain suppressed.

And treatment of symptoms, isn't that what it's all about?