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Roots of Unity

The Shocking Failure of British Rail Travel to Respect the Triangle Inequality

A British train approaches a station. Image: Ingy the Wingy, via flickr.

I spent about a month in the UK earlier this summer, and that meant I took a lot of train trips. I love riding trains: the feeling of endless possibility I get when I look at the departure boards, the countryside rolling by, the fantastic people-watching, the two-hour delay between Edinburgh and Manchester because a [...]

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