[balabaster]

So I can only speak for myself personally. But my perspective is that all the stuff on the exams, I already learned long before the courses became current and have moved onto the next thing. So by the time the course arrives, I no longer care about the content it's delivering because I already did all that. By the time the course comes available for the things I'm learning now, I will already know it and have moved onto the next thing. So that's why those who care about the knowledge don't tend to care about the certificate - because it's a waste of time for us to go back and cram for an exam that's based on technology that has evolved (and thus the material is out of date/no longer accurate, flat out wrong).