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?

is there a story?

explanation:

the following key ideas correctly express the key sentence.

restate key idea: most people can learn to swim in ten short lessons.

restate key idea: the majority of water-accident victims require mouth-to-mouth breathing.

restate key idea: an empty, tightly closed gallon jug will support a tired swimmer.  

restate key idea: first aid is to prevent accidents as well as assist in rescue.

explanation: the key idea needs to have the same topic as the key sentence (drowning and safety).

what are you asking? this is gibberish.