[ He stares blankly at the rest of his sandwich, his eyes already tearing up as his frustration and despair roil just beneath the surface. He licks his lips before taking another bite and continuing. ]

The "power" of extreme suggestibility, according to the explanation, lets others program hypnotic, telepathic, psychic and other similar sorts of mind control and persuasion program suggestions or commands into my subconscious.

[ His mouth feels dry, so dry, and it's not just because he's not having any drink. But he might need some after a discussion like this. ]

And there's no way of knowing about it, so the file says. There wouldn't be any change in my appearance or behavior, I could be going about like I would naturally, but I would still be obeying orders or commands or programming or whatever anyone would like to call it. I might be complying to someone else's whims and... not have any knowledge of it whatsoever. Let alone any consent or free will.

[ It's only now that Simon realises he's squeezed his sandwich; he carefully releases his grip and tries keep it from completely falling apart in his hands.

He heaves a heavy sigh before carefully taking a deep breath. ]

And the immortality is said to only work in tandem with my complying with suggestion, to say the very least.