Westworld Season 2 Finale: What Does The Ending Really Mean?
10. The Forge Was A Store Of Human Data
All throughout Season 2 we've heard a lot about the Forge, the Door, and the Valley Beyond, and while there have been clues to each before now, The Passenger at last revealed what they mean.
Starting with the Forge, this is where Westworld has been storing all of that sweet, sweet human data they've been collecting from guests, which they did via the hats given to them when they first enter the park and has since been whittled down to around 10,000 lines of code for each person.
Aside from being a vast library of data files that could be used to bring guests back, it also serves another purpose: it contains the Valley Beyond, and generates the Door to lead to it. Dolores attempts to delete all of the guest data and flood the place, and while Bernard prevents the former he cannot stop the latter from happening, although it's not completely clear what happens to the guests' data.