How does John Lyons approach desensitization?

John Lyons's approach to desensitization reflects his broader systematic philosophy — breaking the desensitization task into specific, clear steps and working through them with patience and repetition until each is genuinely confirmed rather than simply tolerated. Lyons is particularly associated with systematic sacking out procedures — the progressive introduction of objects, sounds, and movements that might frighten a horse until the horse's response has been reduced from a flight reaction to genuine indifference — and his approach to this work is characterized by a willingness to stay at any given step for as long as the horse needs rather than forcing progress on a trainer's schedule. His desensitization work begins at whatever level the horse can accept with minimal arousal — sometimes at a considerable distance or at a very low intensity of the frightening stimulus — and advances only when the horse's response at the current level has genuinely subsided rather than simply been suppressed. Lyons is direct about the importance of distinguishing between a horse that is calm and a horse that has learned that resistance is futile — the genuinely desensitized horse shows the relaxation markers of genuine habituation, while the horse that has been overwhelmed into apparent calm is suppressing a flight response that will surface when conditions change. His teaching about desensitization has been particularly valuable for riders dealing with horses that have developed specific fears or spookiness through prior experiences, because the systematic, patient approach he advocates is well suited to the gradual confidence building that genuinely phobic horses require. The practical applicability of his desensitization approach to horses with behavioral problems made it one of the most widely adopted elements of his teaching.