My actual Diploma Engineer studies were a bit desultory, but being able to appreciate a larger picture at the same time allowed me to have a better grasp of the interdependence and correlation between the different issues involved. My education provided me with a broad understanding of the field, but acquiring information that goes deeper than that can only be learned through work. With the help of the basic competence which my education provided, I am able to obtain more information when necessary. In our organisation we have an abundance of this more profound understanding, one employee is an expert on one matter and another is skilled in something else. You just need to know who to ask.
Education is a funny thing.
In retrospect, it probably involved some unnecessary courses, but while you are still studying, you do not yet know where your interests ultimately lie and where your career will eventually lead you. I would say my own competence resembles the first type more than the second. Being involved in continuous, on-going development is challenging. You are continuously faced with a variety of new things, and as you are expected to at least know the basics of everything that is of current interest, your ability to learn is continuously being challenged. Thankfully, information also ages eventually.