Summary of Would You Implant Your Phone in Your Brain?

How can you tell that the text is from a biography

When i walked through arlington cemetery, i had a sense of reverence—a respect for the courage, dedication, and sacrifice of the souls buried here. using context clues, what is the meaning of reverence in the passage?

London includes a quote about john thornton as he is observing hal attempt to motivate the exhausted dogs "it was idle, he knew, to get between a fool and his folly". if the word "idle" is defined as "of no real worth, importance, or significance", what does this statement mean with regard to hal? who is the fool? what is hal's folly? why would john thornton think it of no real worth or useless to intervene?