[eitally]

I am one, too, with specialization in high tech electronics manufacturing processes and control systems. To be honest, it's relatively straightforward to understand how manufacturing works... If you have access to a factory. The two areas that I find the most interesting are Operations Research (essentially, solving optimization problems) and Supply Chain Management, which seems like it'd mostly be OR, too, but in reality ends up being much more about how well you understand laws and regulations and can bend them to your will.