Final answer:
The order of user criteria validation in Knowledge base articles is defined by the author and lacks a universal method.
Step-by-step explanation:
The order in which user criteria is validated in a Knowledge base article is essentially determined by the article's author. This indicates that the author has the discretion to decide how to structure the validation process based on the specifics of the content being addressed. Therefore, a universal method for comparing or validating user criteria does not commonly exist, although it is suggested that standard practices could potentially be beneficial.