I see them all the time! They don't know they are crazy ....
It used to be a rare thing, people walking, or driving, talking to themselves. Arguing sometimes, other times pleading, sometimes ranting, to the thin air, not another soul around, and in a crowd, everybody gave them a wide berth, especially the shouters, loud voices raised to no on in particular. Sort of creepy/scary the first few times you saw it.
But in the last ten years or so, they have increased, I see them all the time now. In stores, driving in cars, walking about, standing around, sometimes they are checking out groceries, sometimes they are even in groups, but all of them talking to somebody who isn't there.
I blame these infernal devices they have stuck in their ears, sometimes connected by a wire, sometimes not, some look just like a Borg device, sometimes with LED lights on it. It somehow transforms seemingly ordinary people into crazy people. They stick this thing in the ear, and start going insane.
Like the crazy people of old, they don't seem to pay attention to the real people around them, even getting annoyed if you try to talk to them. They act like you are interrupting what is obviously an very important conversation they are having. With somebody who isn't there.
Sometimes they point at the device in the ear, like that explains everything. It's like they somehow think this excuses them from being not only a crazy person, but rude as well. I've seen them talk with out stopping, while shopping, checking out, walking out of the store, get in their expensive gas hogging SUV, and drive off still talking, never having actually communicated anything to anyone around them.
As is so often the case, the insane think they are quite sane, and anybody who interrupts their own brand of personal crazyness is the bad person.
It's so common that I think everybody is so used to it, it isn't even a shock anymore. I've experimented several times, talking out loud as if I am having a conversation with somebody who isn't even real, and nobody bats an eye.
I'm not kidding. And I don't even have a Borg device attached to my ear.
Once somebody asked me where I got the dental implant, or a sub-vocal transponder or something, but I just ignored them, pointing at my ear, and they stopped bothering me. It really is amazing, this new world.
I've almost given up hope, that this endemic disease, that is spreading like crazy, can be stopped. I think it effected the rich and powerful first, as I noticed they were the first to succumb to the malady.
But now it has spread to every part of society. I stopped to give an obvious crazy person some money (he was talking to himself, begging, with a sign and everything, and dressed rather poorly for the weather), and is my wont, before giving the cash, I said a few words of support to him, but he shushed me, and pointed to his ear. As I walked off, I realized that maybe all those people I thought were crazy so many years ago, talking to themselves, maybe they were just ahead of the curve.