I think what by78 meant to say (although I wish he didn't put it so bluntly) was that people with Engineering/hard science backgrounds tend to have a better understanding of technical aspects of military hardware. You can't really substitute years of hardcore math/science education involving proofs, projects, and experiments with a crash course on popular science. It is easier for someone with an engineering background to spot obvious scientific B.S. than it is for a liberal arts major.
We have a lot of people who don't have engineering/hard science on this forum who are very well versed in what they are talking about. This kind of generalization can be offensive to them. I don't understand why we are wasting time generalizing people when this thread was about just listing the sources you think is reliable and not.