One of my pet peeves is a closely related cousin to Greg's "magical thinking" and seems to be the polar opposite and enemy of objective (some say negative) debate of a project's merits. I call it "powerpoint engineering" whereby someone with an engineering title, CAD suite, and usually some sort of basic analysis program that they do not actually understand makes a lot of pretty presentations that convince management they are going to make the company billions. They then enjoy many months/years being billed as a rising leader within the company and usually do their best to limit invitations to design reviews, other technical, and DFMEA discussions to prevent technical experts from attending. If the chief powerpoint engineer is in-house they often move to a sister company, division, or other distant department shortly before the recalls and warranty claims begin, and often do so with a raise or promotion. If the chief powerpoint engineer is good they also get an important executive to attach their name to the project so its eventual failure is guaranteed to quickly be explained away and forgotten. If the powerpoint engineer is an outside contractor we commonly call them a consultant, pay them 3x as much as necessary, give them 5x as much time to work, and usually have little/no recourse for substandard work and lack of results