 The remaining technique, “paralleling” (móu 侔), or presenting parallel, syntactically analogous utterances, is the most intriguing of the four and the most difficult and controversial to interpret. A variety of accounts have been  proposed.[30]  The interpretive difficulty is due partly to the unfamiliarity of the technique, which has no obvious counterpart in other logical traditions, partly to the absence of any clearly specified examples in the text, and partly to the terminology the Mohists use to explain it. To paraphrase the text, “paralleling” is lining up expressions side-by-side and jointly proceeding with them all (bǐ cí ér jù xíng 比辭而俱行). This description is extremely general, telling us little more than that paralleling involves some form of linguistic comparison in which strings of utterances are extended or developed in some parallel or analogous way. What exactly is referred to by “expressions” (cí 辭) is vague, since, as we saw above, the only explanation the Mohists give is functional, that “expressions” are used to express thoughts. “Expressions” could conceivably refer to anything from a phrase to a sentence to several sentences. “Proceeding” (xíng 行) is also ambiguous. “Proceed” is used in relation to semantics in two other places in the Dialectics, Canons B1 and B72. In both, it seems to refer to “proceeding” to using a general term consistently of similar kinds of things. So “proceeding” in the present context could refer to going on to make consistent, unproblematic utterances. But perhaps it might refer to drawing inferences or simply to uttering strings of interrelated “expressions.” Even the conjunction “and” (er 而) here is open to different interpretations, as it could refer to a two-step process of first comparing expressions and then jointly proceeding with them or, more likely, to a single step of jointly proceeding with them in parallel. 