This post contains spoilers through Westworld's second episode, "Chestnut." Head to our show hub for more reviews, theories, and deep dives.

Westworld has already presented us with several big mysteries to solve, but a minor logistical puzzle, introduced in the second episode, is keeping us up at night: How do people actually get to this place?

Directed by Richard J. Lewis, "Chestnut" begins with Logan (Ben Barnes), a douchey Westworld veteran, returning with his first-timer pal William (Jimmi Simpson) -- a respectful homage to Michael Crichton's original flick, which had James Brolin and Richard Benjamin playing similar roles. HBO's pair even arrives at the futuristic park's headquarters in a similar manner, via nifty levitation.

They don't, however, enter Westworld by stagecoach, as the characters did in the original; they get there aboard a vintage steam train called the Black Ridge Limited. How this transfer between the posh arrival hub and the Old West occurs is worth a closer look because, like everything in the show, it's a head-scratcher.