@kasdeya When I was a young kid in the GDR I had a book about technology. It showed off all the great technological marvels that socialism was capable of, like landing on the moon (https://en.wikipedia.org/wiki/Lunokhod_programme).

The picture that most stuck with me though was very much like this one, and was supposed to explain radio waves: A farmer was shown, operating a horse drawn plough, from his home, by way of a pair of hundred meter long reins (spanning across the whole width of the book).