My biggest question was: What in the world was that thing that appeared, then disappeared?
Answer, after watching all episodes: A beacon, that will help finding the "Observers" son in the far future. As we know by now, the "Observer" is present during every main event that ever happened. Even before Marie Antoinette's destiny. His main goal is to change events, so that at the end, his son will live, without causing suspicion from the other Observers, who have a completely different goal than September (The Observer).
This is a very important episode. September (The Observer) is hiding the beacon that will once in a while appear, then disappear. Walter Bishop owes him his and Peters life, and therefor goes out of his way to help September. Walter, knowing he will be ending up in St. Clairs for helping him - the last thing he wants - goes all in.
This episode reflects the true and deep ethics of Walter. Would this have happened before Walter had pieces of his brain removed, it could have winded up completely different. But it didn't.
Answer, after watching all episodes: A beacon, that will help finding the "Observers" son in the far future. As we know by now, the "Observer" is present during every main event that ever happened. Even before Marie Antoinette's destiny. His main goal is to change events, so that at the end, his son will live, without causing suspicion from the other Observers, who have a completely different goal than September (The Observer).
This is a very important episode. September (The Observer) is hiding the beacon that will once in a while appear, then disappear. Walter Bishop owes him his and Peters life, and therefor goes out of his way to help September. Walter, knowing he will be ending up in St. Clairs for helping him - the last thing he wants - goes all in.
This episode reflects the true and deep ethics of Walter. Would this have happened before Walter had pieces of his brain removed, it could have winded up completely different. But it didn't.