Guys, this is VioletsandIrises—I can't log in to my normal account. There's no log in button…what do I do? I HAVE FEELINGS.

I agree that the ending is supposed to make us unsure of whether Holden and co. are getting themselves into trouble by going to Tycho. It was definitely effective for me—I was thinking something along the lines of "oh, this is going to end badly…I think…but maybe not…hmm…"