Not until 1943 was any, any book written which endeavored to outline ordinary, in ordinary language, what the whole body of psychological knowledge held for the military man. Psychology for the armed services is intended as a textbook written on the college level but also a book in which the military and naval applications of psychological principles are more fully developed than in the earlier work. There's 40 or 50 pages of the use of the eye as a camera acuity fatigue, visual glare, all these things that we're covering right now. And then it talks about this book and this book is going to make you a little bit nervous because it's going to basically say we're writing in Latin. They're actually