 Mou (2016) argues that the Mohists identified these criteria through features of salience in variable fields of cognitive focus: an aspect of a thing can stand as a criterion of resemblance provided only that we, as language users, single it out either through an act of perception or through a mental act in which one’s attention is concentrated inward (such as on a mental image). Furthermore, this aspect may be used appropriately in that the judgments we make may be true or false depending on whether it is singled out in such an attentive act. For example, the judgment “A white horse is not a horse” may be deemed false if the salient aspect of our mental focus is on the “horse-ness” feature of each entity indicated (white horse and horse). But it may also be deemed true if the salient aspect is “whiteness”, since whiteness is a feature that may be true of some horses but not others.