(7) Ideas: Insight, Textual Support, Analysis 6
(6) Organization: Thesis, easy to follow, flows, intro, body, conclusion 5
(5) Word Choice/Voice/Sentence Fluency: 5
(5) Technical Conventions: something extra, no extra time, I can hear you . . . 5
(7) You seem to have read the book 6

Total (30) 27

Why the use of the author in the book? How does that help the theme of human stupidity?
Yes, you've identified the major theme and the plot points that help, but it seems like this goes deeper or the impression is created with more than plot points. Good to mention about the communication. That helped the theme.