i grew up in the seventies, perennially fascinated with the concept of future city, actually holding in my heart visions of shiny silver skyscrapers and flying cars. since reaching adulthood never delighted me with the fulfilling of such naive expectations, i felt a bit doubtful about the way we could approach this project : first things that came up, while we discussed this, had little to do with our current expectations of a future city, but surely brought to mind something interesting about our perception of current ones. we thought that, say, one hundred years ago, nobody in their right mind would have considered as normal and household the, say, peculiar noise coming from an inkjet printing, yet today most of the time this goes by unnoticed.
departing from that, the following step came simple - and we decided to go, and do something as conceptually straight and direct as an imaginary field recordings collage of future cities interior architecture. so we sliced and isolated and proverbially hunted, in the source soundfile that kim posted , an array of unthinkable machinery hummings and cycles, perhaps too thin to catch the listener's ear in the original, or more probably dreamed there into existence by our deluded perceptions :-)
sliced, isolated, magnified, as if close-miking them, as we always do with our surroundings in the present, overdubbed and collaged together in a crackle : the environmental background noise of tomorrow. 

www.logoplasm.org