Many in the field of software development limit their understanding of the field only to technical aspects(i.e analysis, design, code and test).But if u have worked on a proper software project u will quickly realize that non-technical aspects (i.e estimation, scheduling, risk analysis etc) are equally as important. As a software developer i don't believe it is enough to concern yourself with only the technical aspects of software development because a software project is usually populated by stakeholders who expect the developer to be able to come up with reasonable cost and effort estimates, create a flexible development schedule and perform many other other non-technical tasks that directly affect development.