I think you miss my point. The problem is over perception of what is "a flaw that glaring." This differs in academic culture and business culture. As you point out, it can even vary from school to school or company to company.

I think you aren't being entirely self-honest about what is glaringly "obvious." My point is actually that what is "glaringly obvious" in one context to one set of people isn't at all so to another set of people in a different context. Awareness of this should not only be taught in some sort of course but also adopted as a core ability for those in the software field. It's pretty fundamental to a whole host of sticky problems we all face with regard to understanding requirements, design, documentation, and fixing bugs.