Botswana's rapid transition between 1965 and 2016 from one of the poorest countries in the world to one rated as middle income has been extraordinary. Fifty years of change has seen the widespread disappearance of coal-fired locomotives and popularly used passenger trains, and ox drawn wagons. Blacksmiths, paraffin lamps, rondavels and thatched buildings, lime, women carrying buckets of water, metal water tanks have gone. The list goes on: the displacement of the round by the rectangular, migrant labour, hand cranked telephones and party lines, older men in army great coats, school children...