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Can a map reveal too much? How do they direct our thinking? From ancient atlases to satnav and Google, maps continue to be a key planning tool, but how much are they now instruments of control?\nTo discuss what the very word \u2018mapping\u2019 now means Rana Mitter is joined by Vanessa Lawrence CB, head of the Ordnance Survey and Professor Jerry Brotton, Professor of Renaissance Studies in the Department of English, Queen Mary, University of London.\nRecorded on Sunday 27th October 2013 in front of a live audience at Sage Gateshead as part of Radio 3's Free Thinking festival.