what does "think in a perpendicular position"mean? Is there the faintest shadow of a reason why you should not be able to think as well in a perpendicular position before an audience as you can sitting down? Is there any reason you should pay host to butterflies in your stomach and become a victim of the “trembles” when you get up and address an audience? Surely, you realize that this condition can be remedied, that training and practice will wear away your audience fright and give you self self-confidence.