Beth writes:

I was riding in to downtown Boston on the Orange Line, from the Malden Station stop. Seated next to me was a little boy who was REALLY excited to be on the train. He stared out the window and narrated everything to his mother: Trees! I see tracks! What’s that light?! Are we going into a tunnel now?

And at every stop, he turned to his mom to show him where we were on the subway map posted next to them. He was on his way to figuring out all the lines on the system, and finally his mom just started reading off all the Orange Line stops to him to satisfy his curiosity. “Community College, North Station, Haymarket, State, Downtown Crossing…” She got to the Chinatown stop, and he was suddenly riveted. Eyes wide, he looked up at her.

“You mean, this train goes all the way to China?”