It could be that Krakauer wants to give readers a sense of conclusion and then build up the story to explain how it got there. This approach can make the journey more intriguing.
Krakauer might begin the story at the end to shock the readers and make them curious about the events that led up to that point. It's a bold narrative choice that can keep the audience engaged throughout.
Maybe it's to give readers a pleasant and heartwarming feeling throughout the entire story.
The story begins with the remaining Avengers in a state of despair after Thanos' snap. They're trying to figure out what to do next and how to deal with the loss of so many lives.
Jacob's story begins with him in a small town, facing ordinary challenges. It ends with him achieving his biggest dreams and finding true happiness.
Doctor Faustus' story commences with his quest for ultimate power through a demonic deal. It concludes with his soul being claimed by the devil as punishment for his transgression. It's a powerful narrative about temptation and downfall.
Frankenstein commences with Walton's correspondence and wraps up as the monster leaves for parts unknown in the Arctic. It's a tale filled with drama and complex themes from start to finish.
The novel Frankenstein begins with letters written by Captain Robert Walton to his sister as he embarks on a voyage to the North Pole. It ends with the death of Victor Frankenstein and the monster vanishing into the Arctic wilderness.
The winter solstice began on December 22nd every year. This was because the winter solstice was not fixed to a specific day, but was determined by the movement of the sun. In ancient China, twenty-four solar terms were formulated according to the operation of the sun, and the winter solstice was one of them. The winter solstice was the shortest day and longest night in the northern hemisphere, marking the official start of winter. After the winter solstice, the days would gradually lengthen and the nights would gradually shorten. The ancients believed that the winter solstice was the turning point when yang qi began to rise. The winter solstice was also an important time node. In ancient farming society, it was considered a sign that yang qi was beginning to recover and spring was coming. On the winter solstice, the human body's spleen and stomach began to flourish and absorb nutrients easily. Therefore, tonic could strengthen the body and strengthen the resistance. In short, the winter solstice was a solar term determined by the movement of the sun, marking the beginning of winter.
It ends when the main conflict is resolved and all loose ends are tied up. That's just how most stories work.
It's hard to say exactly. Maybe in a particular context or story, 30 has been assigned a symbolic meaning representing the conclusion.
Maybe it's to create a big shock and leave a lasting impression on the readers.