Oh golly oh gosh, is it time to talk about this one folks. As far as I know, every system I've met had this kind of thinking at least once, myself included. It sometimes feel like this shit isn't real and that maybe we're just faking it to then rationalize that it is actually real (for better or worse, depends of the person on how they see this), that this is, unfortunately, the reality we have lived and that this is what it ended up providing us with; people (or sometimes a single person) living rent free inside our frontal lobe alongside us.
Giving our own example, I wanna talk about the reasoning of my own insecurity on this field.
We call it "Quick switching", it refers to a switch that happens either instantly or gradually in the span not greater than a couple minutes.
This is caused due to us constantly still being in stressful situations (or trauma) and, hypothetically speaking, the brain decides that the person fronting at that moment (often being me, the core host) needs protection, therefore switching at such speed for another alter who's capable of handling the situation.
Due to this happening so fast and so commonly, it can often feel like I'm faking all of this, having headmates, having different personalities and backgrounds. Yet, I have to remember, I am, unfortunately, a traumagenic system; the past inflicted on me is what has made me into a system. Of course it's supposed to protect me from this kind of situations, after all this all is a way that the brain handles all of this, a "huge coping mechanism" as someone has said before.
I would be lying if I said that this way of thinking has only happened once-in-a-lifetime. It has happened several times and I'm sure it will keep happening, there's no way out of this but I can still hope to get better in the future. Meanwhile, I will keep discovering more and more about ourselves, keep researching and trying to figure out a way to get help on this as well.
A lot of the help about systemhood and plurality has actually been from system friends, they giving their own points of view and experiences. Thanks to one of them I started questioning the "median" label, thinking that maybe I'm actually not median since the definition keeps wearing off as day passes, researching again about it and realizing that it doesn't fit anymore; don't get me wrong, I am a system, just not a median system.
And that's when I realized that this is something that can and will happened as day pass, old labels will no longer fit as much as we progress and discover more about ourselves, symptoms showing differently from how they were months ago, some being more prominent or happening less recurrently, fronts and switches happening out of the blue, etc.
All of these experiences doesn't make us less of a system, and we all need to understand that. We're us, even if a lot of us are introjected we're still us, and nothing is going to change that ever.
except maybe therapy, but we ignore that part since we're broke