And that likely ties back to the scene earlier in the episode when Arnold was showing Delores around and showed her that one thing he built that he said would answer a question that no one had thought to ask yet.
Which all likely will end up resulting in the watery mass grave of hosts that includes one Teddy, who learned all about his real story during the episode.
Of course, it was also revealed that even though his attempts to gain El Lazo’s assistance ended in a mass host exodus, The Man in Black has an ace up his sleeve of sorts.
He revealed he’s on his way to his greatest mistake, and we’re under the assumption that what he’s referring has something to do with what Delores is currently looking for, which she calls a “weapon.”