"Oh... well..." The thought that the portals here related to his research brings a level of anxiety to the scientist that becomes visible in his mannerisms. "The people who..."

He looks around and comes closer to talk quietly as if someone might here. "The people who took my research move outside of time.. or I postulate that they do through time travel or other means. Time isn't always as relevant as the human mind wants it to be."

Walter sympathizes though because he has a lot of people telling him what he did was wrong, and it was only recently and after institutionalization that he's realized how unethical some of it was or the unethical ways that would come out of continuing his unfinished thoughts.

"I don't know Ziggy." Walter admits. "What were they right about?"