Interviewer: "Do you use traditional design requirements?" C.15: "So we kind of go through the prototypes quickly instead of having a really rigorous computation of all the requirements required... [We] made some decent progress but then when I brought in other people... I noticed that that process just doesn't work for certain people... And then I realize that I need to bring in the more formalized project management structure. It's through that that we will write down the different design requirements."