Using plainspun humor as a brilliant counterpoint and never substituting cant for story, he sketches a world of Darwinian struggle where all the savages wear three-piece suits.
I started with an introduction where I explain the topic, and then paragraph by paragraph I talked about each point and counterpoint from the reading and the lecture.
And then same when you mention the lecturer's idea, " He says that... " mention the counterpoint, and then in another sentence mention some of the supporting detail.