Arguing in Support of the Proposition: Resolved that "Knowledge About Communication Can Only Be Known by the Knower"

I am speaking in support of this proposition - but not without hesitations. For once, I had agreed to debate another proposition. The one in front of us was crafted by one of its opponents, with the intent to oppose it. It is stacked in his favor and puts me in oppositions to his opposition. (Which is why I can't wholeheartedly support it). For another, it is ambiguous. It suggests unwarranted ontological assumption and a kind of abstract objectivism that I cannot support.