Wali has been much quieter since we found Rockwell. I guess she's just letting us catch up. However, she did say something interesting when we were recounting Nerva's ambitions for the Island.
"This place would never allow anyone to master it," she said, and when I asked her to explain, she told me that the great city to the southeast was destroyed by the obelisk itself.
Now it's just conjecture, but it's interesting to think about. Could the curators of these stations be monitoring human behavior and clipping its wings should the survivors ever band together and fly too close to the sun? If each station represents a different group in a larger experiment, "resetting" human progress would make a lot of sense.
It's a bit grim though, isn't it? Yikes.