We take things for granted in London. But here's a New Yorker's reaction to
a fairly straightforward journey through London:

http://uk.businessinsider.com/london-underground-better-than-nyc-subway-2017-8/#canonbury-safe-and-sound-20

[Yes, I know 378s aren't articulated, and that the LO tunnels are a *lot*
more ancient than the JLE.]