The modern city consists of monstrous edifices and of dark, narrow streets full of petrol fumes and toxic gases, torn by the noise of the taxicabs, lorries and buses, and thronged ceaselessly by great crowds.
South Africa has also made its own move to boost trade by becoming the newest member of BRICS, a group of emerging economies comprising Brazil, Russia, India, and China.
And, if nanotechnology progresses as expected, as a sort of building block set of about 90 atoms, then you could build anything you wanted from the bottom up.