One of my paranoid patients uncovered the site Are You Targeted in his searching the internet for proof that he is being harassed by Hollywood and popular music, with messages directed specifically at him. He takes the existence of this site as evidence that his paranoid delusions are true: See, this is happening to other people, too! That different things are happening to those people, and they each have different experiences from each other, with only minor overlap, fazes him not. It's all tied in together somehow.
(The photo is from Ocala, FL)
My other really bright paranoid patient - she was a software developer up until a decade ago - has a different, nonelectronic set of delusions. A homeless person has been stalking her for at least three years, across three states, and recently revealed his existence by mistakenly leaving a purse she had lost in 2007 in a box in her apartment.
Here's the saddening, infuriating, and fascinating part. Both of them are now on medication, and are far more organised and relaxed. Both are able to coherently put on paper or into speech what they were unable to only a month ago. Then, additional notes up the side of the page, or between lines, or underlined and arrowed onto the back made their work unreadable. Now they can write in sentences and paragraphs. (I am overdrawing that somewhat, but the difference is dramatic.) Yet their delusions are absolutely untouched, with the possible exception of the fact that no new material is being added.
So there are two - at least two - parts to the illness, one which is treated by the medication and another which is untouched.