Rhetorical Devices In Ted Talk

How long can you hold your breath? How long is the limitation for a man holding his breath from your perspective (setting). In the TED talk that I watched, a man named David (author) illustrates his personal experience to not only all his audiences and people who watch the TED talk but also doctors or scientists who are attractive to the title of this TED talk and want to dig more (audience), demonstrating an answer to the question above. Besides, David is demonstrating that nothing is impossible (purpose) through his suffering experiences while he was training himself to hold breath as long as he could be(text). At the same time, the author mainly used two rhetorical appeals, which are Ethos and Pathos, to illustrate his story. How he deploys

The role of the neurosurgeon is to gain even more credibility from the audience by showing the scientific fact that holding breath for 17 minutes, which is the goal, could be impossible. Then David tells a story about a boy, who fell through ice and trapped for 45 minutes, but turned out to be fine. The story becomes a trigger later in David's life; He starts to train himself holding breath as long as he could. He uses this story to prove that holding breath over 6 minutes is doable.
The other rhetorical David applies in his talk is Pathos. David lists some attempts he tried before he challenges himself to hold breath for 17 minutes for real, including one of the attempts that doctors stick a bit of tube in David’s throat, which is visually shocking to his audiences. Both his description and the video he shows are demonstrating the audience how hard and painful it is to actually hold breath for a long period of time. Sleeping in a hypoxic tent, which simulates altitude at 15,000 feet, is another attempt David uses to train himself, and he uses phrase wiped out. He says that in the morning, he feels like his brain is wiped out and suffers from headache a lot along with his whole journey. This advocates a sentimental environment to the audience. Also, David uses chronological order while he is telling one of his attempts. He tells exactly