The following story is fictitious

Any resemblance to actual persons, alive or dead, is a mere coincidence.

Meet Kitty and Phoebe – Texas-born sisters who share a love for riding bicycles. Phoebe is studying engineering at Southern Methodist University, a private university in the sisters’ hometown of Dallas, Texas. Texas is one of the southernmost states in the United States. Kitty is studying industrial design at Sul Ross University in West Texas. Purely through kismet, they both won a summer internship at MegaBikeCorp, which is a large multi-national bicycle manufacturing company:

Figure 3.1: Kitty (left) and Phoebe (right) posing with their innovative bicycle prototype built entirely in their robotic factory.

While working at MegaBikeCorp, the sisters had the opportunity to try out several different kinds of bicycles. Phoebe, who lives in a big city, is partial to the road bike. Road bikes use a diamond-shaped frame with two large thin...