Wittgenstein, Zettel:

711. There is a way of looking at electrical machines and installations (dynamos, radio stations, etc., etc.) which sees these objects as arrangements of copper, iron, rubber etc. in space, without any preliminary understanding. And this way of looking at them might lead to some interesting results. It is quite analogous to looking at a mathematical proposition as an ornament. --It is of course an absolutely strict and correct conception; and the characteristic and difficult thing about it is that it looks at the object without any preconceived idea (as it were from a Martian point of view), or perhaps more correctly: it upsets the normal preconceived idea (runs athwart it).