The goal of Digital Cinema is not to recreate reality, rather it is to communicate some view of reality. Marker's technique is to suggest the future rather than spelling it out in extreme detail as George Lucas did in the Star Wars Trilogy. In a low resolution environment, the viewer fills in the resonating space between the details with ones own meaning. Marshall McLuhan observed this phenomenon. McLuhan catogrizes various media as hot and cool.
Cool mediums are low resolution with little detail.
Yet mediums cool elicit intense viewer participation. The viewer fills in what isn't there. Like Goddard in his film Alphaville, Marker selects aspects of contempory Paris to stand for the future. There isn't a lot of detail in the frame but there's enough. The same is true for the soundtrack.