A Letter to the Editor 2
This one appeared in the South Wales Echo in August 2002. At the time, our train service was a lot more limited than it is now, and I took the opportunity to have a bit of fun. I sent it in – but somewhere between my typewriter and the finished page, the Echo typesetters struck. A few weeks later I bumped into my old Maths teacher in the takeaway. He took me to task for using Roman capitals for the irrational numbers – but I'd typed them in italics to begin with. (Incidentally, I seem to be one of the few people who've noticed that Platform 5 has disappeared altogether from Cardiff Central Station. It's all a bit Harry Potter…) Following the news that Cardiff Central Station now has a Platform Zero, I wonder whether Wales and West Trains have any plans to add further platforms in the spirit of mathematical adventure. For instance, the 'circular' City Line between Radyr and Coryton would be ideally suited to run from Platform π , which represents the ratio between