Many companies approach product development as if it were manufacturing, trying to control costs and improve quality by applying zero-defect, efficiency-focused techniques. While this tactic can boost the performance of factories, it generally backfires with product development. The process of designing products is profoundly different from the process of making them, and the failure of executives to appreciate the differences leads to several fallacies that actually hurt product-development efforts. In this article, the authors, an HBS professor and a consultant, expose these misperceptions and others. They look at six dangerous myths:

High utilization of resources will make the department more efficient
Processing work in large batches will be more economical
Teams need to faithfully follow their development plan, minimizing any deviations from it
The sooner a project is started, the sooner it will be finished
The more features a product has, the better customers will like it; and
Projects will be more successful if teams "get them right the first time."
The authors explain the negative effects these "principles" have when applied to product development, offer practical guidelines on overcoming them, and walk readers through a visual tool that will help them keep projects on track.

Based on the reading and analysis of the paper, Six Myths of Product Development, and your understanding of the topics covered in this course, discuss how inadequate testing leads to problems and the impact of the cost of defects on the project.