"I like to think of it in terms of communication bandwidth. The written word is low bandwidth, but if executed well, theoretically the ideas can be consumed mor

"I like to think of it in terms of communication bandwidth. The written word is low bandwidth, but if executed well, theoretically the ideas can be consumed more succinctly." I don't think there's a difference in bandwidth, but that an essay can use the whole bandwidth for words (ideas) and in a speech the bandwidth has to be shared by words (ideas), acoustics and visuals.