that's a fun story! i program on the train often due to occasional long commute (hour one way), but I live in finland so people are much less likely to talk to me, a stranger on the train, out of blue. On couple occasions I wanted to talk to another coder on the train when I notice their laptop stickers (a gamejam sticker or a sticker saying that this laptop is property of company X) but felt too self-conscious to do that cause they looked very focused