The Downright Filthy Pitching Book 2 The Hitter's Attention Theory is the culmination of a 10 year study of hitter's visual skills to recognize pitches, their abilities to react to live pitches with speed differences and an 8,000 live at bat experiment to prove hitters have an attention that is measurable and predictable and most important can be pitched around. Book 2 focuses on how that attention works from the hitter's perspective.