The measuring system of the buddhadharma so to speak, the way we measure things. Some things are good, some things are bad, some things are precious, some things are not so precious. All of that, how do we measure, what makes this specific human body more precious than animal, or for that matter, some other human being. It is always based on one answer. In buddhadharma, anything that is closer, favorable, or having the capacity to understand the Dharma is how we measure what is precious, what is virtue and what is non virtue and so on and so forth.