from Bernays' 1928 book: https://archive.org/details/in.ernet.dli.2015.275553/page/n153/mode/1up https://archive.org/details/in.ernet.dli.2015.275553/page/n1...

from Bernays' 1928 book: https://archive.org/details/in.ernet.dli.2015.275553/page/n153/mode/1up https://archive.org/details/in.ernet.dli.2015.275553/page/n1... > The radio is at present one of the most important tools of the propagandist. What you couldn't do with radio is to triangulate targets via associated clusters; they used snail mail to do that.