I agree...for the most part. I think the author's point is however inclined more towards the case where there is an audience as opposed to an intimate social ci

I agree...for the most part. I think the author's point is however inclined more towards the case where there is an audience as opposed to an intimate social circle. When it comes to an audience type setting, I think it is responsibility of both, the producer and the consumer, to understand that certain knowledge/terminology/context is required. Then, the speaker must communicate in the "lowest common denominator" of that minimal set of expectations.