Erik's fingers twitch with frustration and the edge of despair as Charles' words sink in and a terrifying acknowledgement of logic begins to take grip of his heart and his mind. Erik begins to understand what is going to happen -- what he is going to witness and what he must not do. He must not change the course of the future for if he does, then everything his life has led towards will be for naught.

He will never have met likeminded people.

He will never have met Charles.

Panic grips him in the midst of despair and anger. He looks to Charles and mouths a simple I'm sorry because of what's happened. He's done a terrible thing and he's sorry that Charles and Billy have been here to witness it, not that he's done it. He knows, now, what is going to happen and he doesn't want to be observed like a laboratory rat for the remainder of this torture.

Please. Go.