... kinds of definite referring actions: one is that in which the precondition is mutual knowledge of a descrip- tion. and the other in which there is mutual knowledge of a plan incorporating the ... action, the speaker and he=rer mutually believe that executing plan P will result in the hearer acquiring the required information, but, since only the hearer is actually executing the plan, the ... result in identification of the intended referent, and in the case of the S[ action, the plan is simply to do nothing, because the referent of the term is already mutually known. This is not the...