Of course we are still some way from achieving this ideal, and it is still easier and cheaper to compute in the conventional manner at a desktop using only the data, software, and hardware present in the workstation. Wireless communication is still more expensive, and more constrained by bandwidth, at least in those areas of the developed world that are well served by copper and fiber. But the pace of change is rapid, and in some countries we are already approaching the point where the majority of telephone communication will be wireless.