4 years? My brother was a welder on a nuclear facility. He was a welder
on the nuke plant they built in the Antarctic. He did not spend 4 years
learning to weld pipe. Building a 12 story, or a 50 story building, takes
engineering talent, and lots of training. To bolt, rivet or weld that
frame does not take 4 years to learn. I went to school for 36 weeks to
learn to fix mainframe computer systems for NCR. I got a 4 year degree in
Electronic engineering. That did not require 4 years of 40 hour weeks.