And while it's true that building on any one network standard would offer only a subset of customers access to LTE, they're not statistically insignificant markets.
Mr Balls argued that building on an existing system would be "a more straightforward proposition".
The BBC reports that building on Iran's second enrichment plant in Qom, began in August 2006.
He is also adamant that building on London's green belt is not the solution to the city's housing crisis.
"Experts in coastal processes say evidence shows that building on the dunes accelerates beach erosion," the group said.
He thinks that building on 40,000 acres (16,000 hectares) of such sites could help meet the shortfall of around 7m urban homes.
Even Jewish settlers realize that: most of them typically argue that the Palestinians' ownership claims are invalid, not that building on their land would be just.
Yet despite those assurances, Irene brought into sharp relief the fact that building on a shoreline comes with risks, even in a city where nature can seem to have been nearly completely tamed.
Dr. Berwick still expressed great optimism that, building on health care reform, the American system will, indeed, be transformed to make access to health care "a basic human right".
But an uneasy fact remains: that building on the site of a global event – making workable streets from tarmac wastes and weaving housing around velodromes – is a difficult and expensive way of producing a good city.
