Once upon a time, a train ticket was a small piece of thick card which you bought at the station when you wanted to travel. You would turn up a few minutes early in case there was a queue at the ticket office, which was staffed by a human being who knew his job. Then you waited for your train and made your journey. And that was all. Nowadays, except for local journeys, you have to book in advance and have to travel in a particular train. You might have to buy the ticket on a mobile phone, or else you will have to negotiate a terminal with a confusing and poorly designed touch screen, with every train company having a different layout and programme flow. There is a bewildering variety of tickets and prices. In the latest version of the Swedish Railways (SJ) booking system, there is no means of changing your booking or getting a refund if something crops up. You have to allow an extra half hour or more to be certain of catching the train you have booked for. The railways have adopted one...