Hm, a bit of a deeper cut. The way Friday explained it to me... Reality is a river. You have the beginning [holds up one hand] and the end [holds up the other hand, farther away] and every drop in between is the same river. The river doesn't notice if you take a bucket from it. And, if you toss the bucket back, it just goes right back to being the river.

... I could have returned to my reality, and forgotten all of this. I wouldn't even notice that my brothers were missing, because they wouldn't be. [pause] But, they would be. And so, I stay.