I work in the architectural field. I have worked in residential, small commercial and large commercial for several years. I have also dabbed in civil for about 2 years. I would have to say that the architectural field is not really as hard as some make it out to be. I find it challanging, but then again, I am not a super-brain. If I had to pick one field that was the toughest, I would have to go with electromechanical. I got to meet an engineer from NASA one time. He was an older man, around 75 or so. He was the one that created the over/under washer dryer system that we put into many homes to this day. He showed me the original drawings for the machine. They were hand drawn, and let me tell you, it was a work of art. He has shown the orbit of washing machine, rotational displacements, all little parts and so on. All by hand. It was amazing. So, my hats off to those guys, impressive group.