[Blue's frown deepens as he hears this, tries to make sense of it.]

A person...can be drawn here from any span of time, then...so long as the regret is there...

But-- [his brow knits, looking down as he tries to work this out.] If one of you succeeds in...changing something...What of the other? Does it simply...make a new future?

Doesn't that mean...that whatever was changed...still happens regardless...? Somewhere, in some time...