In Andrew Blum's speech, "Discover the Physical Side of the Internet", what devices does he use to engage the reader?

The correct answer is "Humor"

Explanation:

Andrew Blum is a TED speaker who talked about his findings about the internet in the physical form during the speech mentioned above. He starts when a squirrel chewed through a cable and bumped him offline, then he starts wondering what the internet was originally made of. Then he perceived that he was no longer doing activities in a physical way but just online then he leaves to see the hidden cables, undisclosed switches and other physical bits that build the internet.