Christopher is considering breaking up with his high-school sweetheart. He spends many hours weighing the benefits and drawbacks, he asks his friends for advice, and he thinks about it further before coming to his decision. In this case, Christopher is using .

Read this excerpt from leah missbach day's foreword to wheels of change. bicycles have long played a role in my life. as a young woman, i rode one year-round before i had a car. but it was later in adulthood that the bicycle became more than a source of transportation for me. the bicycle actually began to truly shape the way i saw the world. what is the author's purpose for including this in the foreword?