Board Thread:General Discussion/@comment-26006155-20190403163405/@comment-32182236-20190424131332

"But, I don't see a reason why the barrier isn't its own light-generator. Like you pointed out, we can't see any light from the outside world, so how is the barrier getting light? It's likely that the barrier creates its own light...but if that's the case, that means that the room without light is after the barrier!"

We can't see any light from the outside world because it's too far away from the Flowey Room, and too far away from the room where we meet the rest of the monsters.

It's not after the barrier, it's WELL before the Barrier. And I told you why it's all white:Light is allowed in, but not out. We DO see light from the outside world. And at the same time, it reflects all light that tries to come out, so we see it as a white wall that glows.

"I mean, it's odd, I guess. But that doesn't really disprove the theory!"

It DOES. It would be impossible for the monsters to maintain that door. It would have crumbled into ruins, because they couldn't have touched that final door if it was on the other side of the Barrier.