One of the best two hours I spent was at a meeting of the NSA back a few months ago when the gentleman speaker, who was a Dr. of psychology spoke on the science of doing a public speaking presentation. It centered around how the brain reacts to different types of stimuli… and then build a dynamic presentation knowing those key stimulation points. Using that info, you know how to stimulate the brain and then provide great content for that stimulated brain. Sounds like I am geeking out on that, which I am but ohh is it effective.