"And he was a fool, if he didn't. He always treated his toys better than other ponies. It is a flaw all Designs seem to possess. As if some...switch in their brains cause them to treat their toys as ponies and ponies as toys. But you are wrong in any case."
Her horn glowed softly.
"Have you heard of phoenix liquor, Ms Table? It is a drug that sharpens the mind considerably. Makes things clearer than they would otherwise be. My son was on it when he realised the full consequences of what his little project would bring. I do not know all the details, but I do know it they horrified him beyond belief. Enough to try to erase his own memories."
Glitter snorted.
"Even on phoenix liquor, it was a foalish, foalish thing to attempt, trying to erase one's own memories. If I wasn't versed in the particulars of psychomancy, his brain would have been irreparably damaged. He destroyed all his work, of course. And I think Equestria was better for it.
I thought either he had completely erased it from his mind, or at least left some unconscious triggers to prevent him returning to his path of destruction. It appears not, and it seems that you have been drawn into the whole miserable business."
Her horn stopped glowing.
"There are two things to draw from this, Ms Table. One is that you cannot fix him, because not only are some pieces lost forever, he simply does not have a fixed state. Two, it is better for us all that word of the AME does not spread. If it's destructive tendencies are something that would make Intel pause-" she drew a breath, "-then it is something that should be better of untouched."