The Man in the High Castle Fate and Free Will Quotes

How we cite our quotes: (Chapter.Paragraph)

Quote #10

"One by one Hawth made the choices. Thousands of them. By means of the lines. Historic period. Subject. Characters. Plot. It took years. Hawth even asked the oracle what sort of success it would be. It told him that it would be a very great success, the first real one of his career. So you were right." (15.116)

Caroline Abendsen explains Hawthorne's writing method, which definitely works for writing tweets. But notice how confused this section is. She starts out saying "Hawth made the choices" and then notes that it was "By means of the lines." So if the I Ching made the lines, what choices did Hawth make?