FEEDBACK

摘要

The "Wakefield triangle"-in which Paul Barker's attempts to get a wireless connection on the train produced the warning "No map contains our current position" - is not as "unexpected" as we thought (11 June). Norman McCanch is one of many readers who told us so. He writes: "Purely to confirm my reputation as a pedantic old fossil, can I mention that this term has long been used to describe 'the Rhubarb triangle' - a 23-square-kilometre area in West Yorkshire, UK, famous for producing early forced rhubarb."