Interesting theory for S3
[spoiler] ok so we learn that all of the silos are connected somehow. Yes Silo 17 is in ruins now and without outside materials to rebuild will be extremely difficult if not impossible to rebuild.
But we also learn that IT gets power from somewhere else and in the secret (no so secret) deep down by the abandoned drill head there’s also supposedly a connection to somewhere.
What if the 2 silos are intact directly connected and a figurative and literal path is opened up between the 2 and possibly all the silos. Creating a massive labyrinth of all the silos. Once they are all or mostly all able to work together is when people can finally start leaving.
At the current pace of the show this may be difficult to squeeze into 2 more seasons.
Perhaps there is going to be a sequel?