It is impossible to control some types of variation: between students in a class, the ways customers try to use our products, the physical condition of patients who enter the hospital, etc. How do we minimize the impact on the outcome (education, health, etc.) when this variation is present? To desensitize means to cause a non-reaction to some stimulus. This change concept focuses on desensitizing the effect of variation rather than reducing variation. Examples of this concept include desensitizing the customer to variation in a product or service, desensitizing a process to variation of incoming parts, and desensitizing a product to variation from the perspective of different users.