Effective summaries require a true representation of what others have said and also your impression. These two requirements are crucial to give a summary the credibility it requires. If the summary lacks in any of these two departments than the summary would be considered deficient. Not representing the truth in a summary would mean the summary is biased, and if the summary does not offer a reaction than the summary would be tedious to read. The exception is Satirical summaries, whereby you twist what others have said in order to reveal shortcomings in their ideas. The book mentions “The Daily Show” as an example of satirical comedy, I prefer “The Colbert Report”. Stephen Colbert is a master at this. He pretends to be a hardcore conservative republican and distorts some of their postions in order to reveal the absurdity of their policies. A must watch!