"how long you been working on this?"
"Almost 10 years."
"Seems really long."
"Yes, normally it's 5 years but I can't enough time to finish it. I'm always working on Prof. Engineer's research projects."
"I mean can't you just leave?"
"No, not at all. You are completely beholden to your advisor. Can't get money, lab time, assistants without them. I'd have to walk away from all my research."
I was gobsmacked. Professor Engineer was teaching a course I was taking, though he wouldn't recognize me in my shop bunny suit. His attitude towards students was nothing like his attitude towards his graduate researchers. This was not the first story I heard and I assumed that's how grad school worked.