We’ve known for a while that, in his sleep deprived state, Irv’s memories can seep from one side of his severed brain to the other (the elevator he paints as an outie, the black paint that oozes all over his desk as in innie). We also know that his outie—who keeps a trunk in his closet with old navy medals and an article about suing Lumon for workplace injury—has been investigating Lumon and tracking severed employees throughout the town of Kier.
This season, his investigation has become more overt. We’ve seen him, now twice, go into a phone booth and report on the work of his innie. The first time, he says that his innie received his message. The second, he worries, “I think they know what my innie was up to.”
We don’t yet know who he is talking to. (An inside mole? An outside revolutionary like Reghabi? Ms. Cobel, as one redditor posits?) But we do know that innie and outie have been trading information back and forth—mostly about the look and location of the down elevator (information he hid behind the “hang in there,” poster for Dylan), but also about certain events outie Irv would like his innie to look into.
This comes to pass, most notably, when Irv falls asleep against a rock in “Woe’s Hollow,” and dreams, among other things, of a computer with a file entitled “Montauk” along with a very specific number sequence. This, I believe, was a message from his outie.