Our son claims that I act like I’m 19-going-on-sixty-something. (Sticking out my tongue and blowing you a good Bronx cheer....)
Actually started my engineering career on a drawing board (still have one in the shed that I use for smaller jobs), but got into CAD about the time that the first commercial systems came out.
I knew you were around that age, the learning curve must have been harsh. I went to college in the 70’s and back then we had a punchcard computer I learned Basic on, not sure where you would have fit that in before or after the VN war.