Update: I thought CAD was just a tool, then a detailer at a Dallas shop showed me his redline folder
I always figured drafting was mostly about software. Learn the commands, get fast, done. Then a detailer I met on a job in Dallas let me flip through his redline folder, and it had 14 versions of the same stair connection, each one marked up by a different guy in the shop. He said the drawings that stick are the ones where you can trace every change back to a real question somebody asked. That hit me, because I used to just clean up lineweights and call it good. I thought being a drafter meant making the sheet look nice. Turns out the markups, the notes in the margin, and the little arrows are where the actual thinking lives. Now I keep a folder of my own old redlines and go back through them when a job feels off. Does your shop keep old redline sets, or do they get tossed once the revision is out?