 What are “uniting the same and different,” “separating hard from white,” and “making so the not-so and admissible the inadmissible”? Given the limited evidence, we cannot be completely sure what these phrases—along with “the dimensionless”—allude to. But most likely they denote types of sophisms or paradoxes, not specific statements or  doctrines.[6]  And early texts, especially the Mohist Dialectics, do give us enough information to make reasonable conjectures about the general issues they involve. (See the entry on the  Mohist Canons.)