Have I been working too hard or not nearly hard enough?
I just printed out a paper. It was only after reading all the way through the first section that I realized I’d already read it. And that I have another copy of it sitting in front of me on my desk.
I’ve done that! Though admittedly I had the paper filed in a folder, that paper was highlighted, commented upon and … uh… I’d redone quite a lot of the mathematics.
You are not alone in your shame.