I have a complete set of college degrees, B.S. in physics from a private university, Masters in American History, and Ph.D. in the History of Technology and Science from a public land-grant university. I also went through a traditional craft union's apprenticeship program in carpentry, audio design, electrics and lighting, and static (but not dynamic) rigging. So, I've done both. I also a years worth of training in secretarial school because my mom thought it would help me in college (she was right), and did a welding program in a community college because I like stuff like that, and some time at the National Executive Institute because my job at the time demanded it.
P.S. Static rigging is hanging sound systems, lighting truss and that kind of stuff, dynamic rigging is what they do in Cirque du Soleil, which amazes me, rigging for a human body in motion is a whole different world than a dead hang - no matter the weight.