To those people I tend to recommend to draw their talk as a flow chart of thoughts which depend on each other. If one thing leads to another draw an arrow. If i

To those people I tend to recommend to draw their talk as a flow chart of thoughts which depend on each other. If one thing leads to another draw an arrow. If it does not, don't. If there is a tangent mark it as a tangent (going 90 degrees to the side). You can do this with your own talks, or talks you really liked or disliked. You'd be surprised of the structural differences