[snambi]

A speech is like music. In music, the composer goes from low tempo to high tempo. Every good song will have this pattern of going from low to high and then descending. Good speech has these elements too. Great orators, present their ideas with the tempo going up and end with a crescendo. Think Martin luther King, Obama etc.

Here, the content is important, but more important is the music like rhythm. Thus, it is more like entertainment, rather than conveying of ideas.

If you are in a live concert, the audience enjoy the music, most of them don't really understand it. It doesn't have to convey much, except to keep the audience engaged and inspired.

When conveying ideas, I think one-to-one conversation is best. In the absence of a one-to-one conversation, a speech that feels like a conversation or an essay would be best.