That one old timer who showed me how to read a blueprint backwards
I still think about a guy named Frank I met on a job in Richmond back in 2008. He was maybe 70, been drafting since before computers were a thing. I was struggling with a beam layout for a commercial building, and he just walked over, flipped my blueprint upside down, and said 'try reading it from the ground up, not the roof down.' Took me a second to get what he meant, but once I did it clicked hard. He showed me how the load path works in reverse, and I never looked at a structural drawing the same way again. He retired like a year later, and I never got his number. Has anyone else had a random stranger just change how you see a detail like that?