I'm often amazed at the sense of privacy travelling by train affords some people. Especially because a train is such a public space.
We all know the examples of a telephone conversation about a dramatic and personal break-up at the end of the car - to be heard clearly all the way through. And today I found myself travelling next to - what appeared to be fairly senior management - people talking through proposed changes on some complex and politically sensitive topics.
Maybe they thought that the complexity of the topic meant that no one would get what they were talking about anyway?