"That picture raises the old question posed by those 19th century maps of Africa: What happens to the people who aren't on the map, or who are barely represented at all? "What I worry is that what this will start to do is simply reinforce the divides and the differences between the haves and the have-nots, the cores and the peripheries," Graham says. “It’s most worrying for the places that are essentially off the map – or not in the database.”"