nah, but do it enough & have enough different experiences & I start looking back & thinking about if it was a big deal for me or not. I've had epic failures messing w/ broken valves & incorrectly dis-assembling my pump on the side of the rd, yadda yadda yadda, so if I can maintain a modest 15 minutes per tube swap, I'm happy

same thing w/ stats from computers, they don't matter so much to me, but looking at a history to start to reflect on what was good/easy & what was a challenge