Who are the people watching the computers?

While we don’t know their identities, it clears up who the “twins” were in Woe’s Hollow. They seem to be individuals that are deliberately similar to our refiners, basically “shadows”.

And this tells us a lot about the severed floor! Now we definitely know that there’s more staff on the Lumon back-end, and all their actions are being analyzed.

What do the rooms mean?

The episode implied that the rooms are scenarios that Gemma strongly dislikes, with each room having a separate severed version.

Why do they have the same name as the files?

The implication is that MDR is responsible for something in relation to the room - they probably either “uncover” the scenarios the test person hates, or they prepare/change the innie versions in some ways. I’m thinking it’s the earlier since Cold Harbor isn’t done yet, and Mark is still working on the file.

We know Cold Harbor is important, but now it’s a room also, what’s in it?

It’s going to be a scenario like the other rooms, and the episode foreshadowed that it will involve drowning (or suffocating).

Somebody said the doctor is going to have to let Gemma go, why? And go where?

Presumably this will be the topic of the next few episodes.

Also, we know now she’s still alive, but Mark said he saw her dead body. What did he look at?

Rhegabi explained that Lumon has people at the morgue. They found a corpse that looks similar to Gemma, and burned it (Mark mentioned something about identifying her charred remains).