Every word is polyvalent; all speech is metaphoric. Every utterance in every context is a metaphor that is grounded at best to a shared set of core concepts, where foundational concepts are contextually dependent on the overall beliefs and belief system of the individual speaking, and where high level concepts need not be congruent in any way beyond the physical boundaries of any individual participant.
Simply because we believe a thing, that does not imply that others believe or understand that thing in a way that even remotely resembles our own conception of that thing. Consider for example the word "communication."
In this particular case, the only thing any individual participant can be certain of is that there exists a severe disconnect between what Colborne Street residents regard as communication, and what they have been told communication consists of. It's quite disheartening really; for "they who have put out the peoples eyes reproach them of their blindness."