Perfect Software
Julia is looking for perfection in her designs. Designing the "perfect" system is difficult. But when you design software for the space shuttle, you need to get as close to perfect as possible:
An article about the development process for the software used in the space shuttle. It's old (1996/1997), but it's an interesting read when you see stuff like this:
Even the smallest error in space can have enormous consequences: the orbiting space shuttle travels at 17,500 miles per hour; a bug that causes a timing problem of just two-thirds of a second puts the space shuttle three miles off course.