The term Irish diaspora is open to many interpretations. The diaspora, broadly interpreted, contains all those known to have Irish ancestors, i.e., over 100 million people, which is more than fifteen times the population of the island of Ireland, which was about 6.4 million in 2011. It has been argued the idea of an Irish diaspora, as distinct from the old identification of Irishness with Ireland itself, was influenced by the perceived advent of global mobility and modernity. Irishness could now be identified with dispersed individuals and groups of Irish descent. But many of those individuals were the product of complex ethnic intermarriage in America and elsewhere, complicating the idea of a single line of descent. "Irishness" might then rely primarily on individual identification with an Irish diaspora.