THEORY: The Train itself is ALIVE to some extent I'm not sure if it needs to feed off of people's experiences or something but I do think that even without one one in the captain's seat the train itself is alive.
1/? #FinishInfinityTrain

For one thing the train itself still picks up passengers even after Amelia overthrows One, I don't think she'd make the train do that - it's almost as if it's on auto pilot? Or perhaps it's ALIIIIIIVE #FinishInfinityTrain

I personally think the train picked up Tulip both to help her on her own journey and because it knew she may be able to get through to Amelia. The train doesn't show up to Tulip immediately as we've seen with other passengers 3/?
#FinishInfinityTrain

Tulip walked an unknown amount distance in the snow before the train picked her up as opposed to Grace - the train showed up ASAP when she was crying in the police station or Min and Ryan - train showed up real quick inside another train #FinishInfinityTrain

I think the train observed her for a bit, crunched the numbers, and deduced she may be able to solve the Amelia problem and reinstate One as conductor 5/?

Might post more in this thread later, I'm watching the show again in the background as I do this 6/?
#FinishInfinityTrain