ON NOVEMBER 3rd the first office workers moved into One World Trade Centre, a new skyscraper built on the site of the 2001 terrorist attacks in Manhattan. Around 170 employees of Condé Nast, a media company, moved into the building, whose height of 1,776 feet (541 metres) symbolises the date of America's declaration of independence. The building has dethroned the Willis Tower in Chicago as North America's tallest skyscraper, but still looks up to others in the battle to be the world's loftiest. That title is held, for now, by the Burj Khalifa in Dubai. For New Yorkers, of course, the height of One World Trade Centre will matter far less than its message of resilience and renewal.