"Looks like this is your limit—"
Lieutenant Walter looked at Eno, who still had not given any feedback after all this time, and gradually gave up on the possibility of obtaining "decisive testimony" from him.
In truth, he himself had been somewhat interested in the 3rd Secret Special Operations Unit, and had conducted some research into it.
What the 3rd Secret Special Operations Unit had truly done was artificially create "dissociative identity disorder."
Namely dissociative identity disorder, DID, also known as multiple personality disorder, MPD.
To explain it in written terms.
It referred to a dramatic dissociative disorder, in which two or more distinct identities or personality states appeared, and these different identities and personalities alternately controlled the patient's behavior in some way.
Each identity also possessed an entirely different personal history, self-image, and name.
Each represented a unique and complete emotional and thought process, and indicated an independent, stable personality.
The Earth Alliance, meanwhile, had used certain special information and memory content as an anchor to activate the hidden personality they wanted inside Eno's mind.
Calling it brainwashing was accurate, yet it was even more terrifying than brainwashing.
Because multiple personalities were a mental illness that seemed cool on the surface, but was in fact utterly despairing.
Once diagnosed, there was no cure.
At least, no true case of recovery from multiple personalities had ever appeared in this world. It was not that the person involved did not want treatment, but that after treatment, they might not even be certain whether "I am still me."
In truth, humanity's definition of the self came entirely from conclusions drawn from external feedback.
To put it plainly, it was knowledge and experience—or, in a narrower sense, memory.
The philosophical question: who am I?
For normal people, the answer to this question was