First job was in a mainframe environment, compiles were pretty quick but the job queue was so big and developer compiles were low enough priority that it could

First job was in a mainframe environment, compiles were pretty quick but the job queue was so big and developer compiles were low enough priority that it could take hours of wall clock time to turn around. I don't remember the specifics but while watching the job queue on the terminal screen I discovered that the job priority was editable. So I bumped it up, my compile job ran, and I was happy. I only did this a few times before I got a lecture from the system operations guys that was quite explicit that I should never do this again. Yes, you figure out how to run code mentally, how to check carefully for typos and syntax errors, etc. No Intellisense then either, that's another modern crutch.