A journey taken every day, often the same people sitting there in the carriage that you've claimed for yourself, it's yours and these people are being allowed to share it with you. Looking at insurance and holiday adverts above the person opposite. Eye contact is a glimpse in to their soul and they're not going to give you that, who knows what they'll give away? The person who gets off the train at that obscure stop which you know nothing about, what's...