To your point Jeffrey, sometimes the best writers are not the best presenters/speakers. And sometimes even the best presenters have difficulty expressing ideas — can be the hardest of all and it sounds like there is something invisible that he is attempting to make visible? It reminds me of the limitation of words and the need for other methods, especially with really large groups so we can learn with our other intelligences? It strikes me that Presenting is not teaching OR learning – just presenting. Thank you for thinking out loud in this blogpost … another way we make the invisible (our thoughts) visible (words/pics)!