[If he was the type of person to smile freely, he would have smiled just then. Instead, he settles for a small nod.]

I told you earlier this week, I don't regret anything I've done. [ Which is why the motive for him falls flat this week-- what he wanted to fix wasn't a mistake he had control over.

The following question makes him pause a bit, but he keeps instep.]

In a way. There's an art which is capable of doing anything. [ Which included time travel, naturally.]