I spent almost an hour trying to explain to an Engineer how GDnT works and how and why the part was failing. I would think with all of the GDnT on the prints they would have a better understanding of it. (I know its not all engineers may be just a few that I work with)
College Grads in mechanical engineering get two weeks of curriculum related to blueprint reading. They blow the dust off the top of the iceberg.
They receive nothing regarding inspection methods or proper application of GD&T.
Like Mike said above, most are extremely dangerous with that piece of paper, and no hands-on quality or manufacturing experience.
Well if it makes anyone feel any better I am the go to guy at my work for all things GD&T. I am not an engineer but an ex machinist turned inspector. Since I got my certificate engineering comes to me.
From ASME. You can look up online who has a certificate from ASME and where they work. I have pulled it out on more than 1 occasion when we hit a wall and its obvious that they are wrong. Its great to hear them say " that's my interpretation" or " that's how I was taught"